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Presenter Index

Čižmešija, Aleksandra
University of Zagreb, Faculty of Science, Croatia
Asymptotes and asymptotic behavior in graphing functions and curves: an analysis of the Croatian upper secondary education within the anthropological theory of the didactics
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Poster presentations
 

Şeker, Vuslat
Middle East Technical University, Turkey
A case study of a first grade teacher's quality of implementation of mathematical tasks
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Aaten, Aaltje Berendina
University of Groningen, The Netherlands
Undergraduates' reasoning while solving integration tasks: discussion of a research framework
TWG 14 University Mathematics Education:  Paper presentations
 

Abboud, Maha
LDAR, France
Real uses of ICT in classrooms: Tensions and disturbances in the mathematics teacher’s activity
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Achour, Samia
Université de Tunis, Tunisia
Epistemological and institutional study of algebra in secondary school: the semiotic, semantic and syntactic point of view
TWG 3 Algebraic Thinking:  Poster presentations
 

Ahl, Linda
Kriminalvården, Sweden
Designing a research-based detection test for eliciting students' prior understanding on proportional reasoning
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Akrouti, Inen
Virtual University of Tunis, Tunisia
The impact of the teacher’s choices on student’s learning: The case of Riemann integral in the first year of preparatory classes
TWG 14 University Mathematics Education:  Poster presentations
 

Alam, K.M. Nabiul
UCL Institute of Education, UK
Bangladeshi rural secondary madrasa (Islamic school) children's participation in higher mathematics optional course: a close look through gender lens
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Poster presentations
 

Albano, Giovannina
University of Salerno, Italy
A computer-based collaboration script to mediate verbal argumentation in mathematics
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Allard, Cécile
LDAR, France
Learning to use a protractor: touch screen tablet or not ?
TWG 4 Geometry:  Paper presentations
 

Amit, Miriam
Ben Gurion University, Israel
‘Explicit teaching' as an effective method of acquiring problem solving strategies - The case of ‘working backwards'
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Anastasakis, Marinos
Loughborough University, UK
Exploring the types of tools used by engineering undergraduates
TWG 14 University Mathematics Education:  Paper presentations
 

Andersson, Catarina
Umeå University, Sweden
Formative assessment - and the component of Adjusted Teacher Instruction
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Andra, Chiara
Politecnico di Milano, Italy
An analysis of freshmen engineering students' notes during a preparatory mathematics course
TWG 14 University Mathematics Education:  Paper presentations
 

Andrade-Molina, Melissa
Aalborg University, Denmark
Incepted neoliberal dreams in school mathematics and the ‘Chilean experience’
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Andre, Martin
Pädagogische Hochschule Tirol, Austria
Implementing the statistical investigative process with real data: Effects on education in secondary schools
TWG 5 Probability and Statistics Education:  Poster presentations
 

Andrews, Nick
University of Oxford, UK
Differences in the forms of content teachers are seen to offer over time: Identifying opportunities for teacher growth
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Andrews, Paul
Stockholm University, Sweden
Beginning teachers' perspectives on linear equations: A pilot quantitative comparison of Greek and Cypriot students
TWG 11 Comparative Studies in Mathematics Education:  Paper presentations
 

Arce, Matías
University of Valladolid, Spain
Rethinking the students' comments in the mathematics notebook: A resource-based perspective
TWG 9 Mathematics and Language:  Paper presentations
 

Ärlebäck, Jonas Bergman
Linköping University, Sweden
Developing a classification scheme of definitions of Fermi problems in education from a modelling perspective
TWG 6 Applications and Modelling:  Paper presentations
 

Arnesen, Kristin Krogh
Norwegian University of Science and Technology, Norway
How do prospective teachers imagine mathematical discussions on fraction comparison?
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Arteaga, Pedro
University of Granada, Spain
Chilean primary school students levels in reading pictograms
TWG 5 Probability and Statistics Education:  Paper presentations
 

Asami-Johansson, Yukiko
University of Gävle, Sweden
Comparing the practices of primary school mathematics teacher education. Case studies from Japan, Finland and Sweden
TWG 11 Comparative Studies in Mathematics Education:  Paper presentations
 

Aslan-Tutak, Fatma
Bogazici University, Turkey
A high school novice teacher's perception on the effect of content course taken as preservice
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Azrou, Nadia
University Yahia Fares, Algeria
Meta-knowledge about proof
TWG 1 Argumentation and Proof:  Paper presentations
 

Bagger, Anette
Department of Applied Educational Science, Sweden
"It is only a test" - social aspects of displaying knowledge in mathematics for Second Language Learners (SLL)
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Bakker, Arthur
Bremen University, Germany
Towards argumentative grammars of design research
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 

Bakogianni, Dionysia
National and Kapodistrian University of Athens, Greece
Negotiating the content and the teaching of statistics: Two complementary processes in teachers' professional development
TWG 5 Probability and Statistics Education:  Paper presentations
 

Baldry, Fay
University of Leicester, UK
Analysing a teacher's orchestration of mathematics in a ‘typical' classroom
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Bampili, Amalia-Christina
National and Kapodistrian University of Athens, Greece
The transition from high school to university mathematics: a multidimensional process
TWG 14 University Mathematics Education:  Paper presentations
 

Bansilal, Sarah
University of KwaZulu-Natal, School of Education, South Africa
Understanding the concept of vector subspace: A case study of Zimbabwean teachers
TWG 3 Algebraic Thinking:  Paper presentations
 

Barabash, Marita
Achva Academic College, Israel
The double nature of didactic models in conceptualizing the evolution of number systems: A mathematical model and a learning tool
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Barkai, Ruthi
Tel Aviv University, Israel
Noticing aspects of example use in the classroom: analysis of a case
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Barquero, Berta
University of Barcelona, Spain
Levels of analysis of a mathematical modelling activity: beyond the questions-answers dialectic
TWG 6 Applications and Modelling:  Paper presentations
 

Batista Rodrigues, Bruna Mayara
University of Lisbon, Portugal
The construction and study of the ellipse through Huzita-Hatori axioms: An investigative activity in analytic geometry classes
TWG 4 Geometry:  Poster presentations
 

Batteau, Valérie
HEP, Switzerland
Study of primary teacher’s practices for a lesson after a Lesson Study process in mathematics
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Baya'a, Nimer
Al-Qasemi Academic College of Education, Israel
The development of pre-service teachers' TPACK in the use of digital tools
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Beck, Johannes
Julius-Maximilians Universität, Germany
Written documentations in final exams with CAS
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Behrens, Daniela
University of Bremen, Germany
The perspective of indexicality: How tool-based actions and gestures contribute to concept-building
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 

Benölken, Ralf
University of Münster, Germany
Developing student teachers' professional knowledge about learning difficulties by "learning-teaching-laboratories"
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Bergman Ärlebäck, Jonas
Linköping University, Sweden
Using a Models and Modeling Perspective (MMP) to frame and combine research, practice- and teachers' professional development
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Bergwall, Andreas
Örebro University, Sweden
Conceptualizing reasoning-and-proving opportunities in textbook expositions: cases from secondary calculus
TWG 1 Argumentation and Proof:  Paper presentations
 

Bertini, Luciane de Fatima
Universidade Federal de São Paulo, Brazil
Arithmetical problems in primary school: ideas that circulated in São Paulo/Brazil in the end of the 19th century
TWG 12 History in Mathematics Education:  Paper presentations
 

Beyerl, Maria
Technical University of Braunschweig, Germany
Project of mathematical problem-solving in classrooms
TWG 19 Mathematics Teacher and Classroom Practices:  Poster presentations
 

Bini, Giulia
LSS Leonardo da Vinci, Italy
Maths Welcome Pack: a multi-sensory introduction to mathematics for high school students
TWG 24 Representations in Mathematics Teaching and Learning:  Poster session
 

Bitterlich, Elisa
TU Dresden, Germany
Subjective theories of teachers in dealing with heterogeneity
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Biza, Irene
University of East Anglia, UK
“Points”, “slopes” and “derivatives”: Substantiations of narratives about tangent line in university mathematics students’ discourses
TWG 14 University Mathematics Education:  Paper presentations
 

Björklund Boistrup, Lisa
Stockholm University, Department of Mathematics and Science Education, Sweden
The context of workplaces as part of mathematics education in vocational studies: Institutional norms and (lack of) authenticity
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Björklund, Camilla
University of Gothenburg, Sweden
Aspects of numbers challenged in toddlers' play and interaction
TWG 13 Early Years Mathematics:  Paper presentations
 

Bjørnebye, Morten
Hedmark University of Applied Sciences, Norway
Perception, cognition and measurement of verbal and non-verbal aspects of the cardinal concept in bodily-spatial interaction
TWG 13 Early Years Mathematics:  Paper presentations
 

Bjuland, Raymond
University of Stavanger, Norway
Investigating potential improvements of mathematics student teachers' instruction from Lesson Study
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Bobis, Janette
The University of Sydney, Australia
The impact of professional development on teachers' autonomy-supportive teaching practices
TWG 18 Mathematics Teacher Education and Professional Development:  Poster presentations
 

Bobsin Salazar, Sabrina
University of Michigan, USA
Teaching practices in a mathematics classroom and their connection to race and racism in the United States
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Böcherer-Linder, Katharina
University of Education Freiburg, Germany
Representing subset relations with tree diagrams or unit squares?
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Bock, Wolfgang
University of Kaiserslautern, Germany
Product orientation in modeling tasks
TWG 6 Applications and Modelling:  Poster presentations
 

Boero, Paolo
Genoa University, Italy
Cognitive unity of theorems, theories and related rationalities
TWG 1 Argumentation and Proof:  Paper presentations
 

Bolstad, Oda Heidi
Unuversity College of Sogn og Fjordane, Norway
Research on mathematical literacy in school - Aim, approach and attention
TWG 11 Comparative Studies in Mathematics Education:  Poster presentations
 

Borromeo Ferri, Rita
University of Kassel, Germany
Mathematical modelling as a prototype for interdisciplinary mathematics education? - Theoretical reflections
TWG 6 Applications and Modelling:  Paper presentations
 

Bosch, Marianna
IQS School of Management, Univ. Ramon Llull, Spain
Teaching didactics to lecturers: a challenging field
TWG 14 University Mathematics Education:  Paper presentations
 

Branchetti, Laura
Politecnico di Milano, Italy
Secondary school teachers' choices concerning the transformation of knowledge in the didactical transposition of real numbers and continuum in the high school
TWG 14 University Mathematics Education:  Paper presentations
 

Brandl, Matthias
University of Passau, Germany
Interactive mathematical maps for de-fragmentation
TWG 14 University Mathematics Education:  Poster presentations
 

Bray, Aibhín
Trinity College Dublin, the University of Dublin, Ireland
A study of readiness for the integration of 21st century practices in the mathematics classrooms
TWG 19 Mathematics Teacher and Classroom Practices:  Poster presentations
 

Breda, Adriana
Universidad de Los Lagos, Chile
Didactic assessment over a final work of a master for mathematics teachers in service
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Breive, Svanhild
University of Agder, Norway
Kindergarten children’s argumentation in reflection symmetry: The role of semiotic means
TWG 13 Early Years Mathematics:  Paper presentations
 

Bretscher, Nicola
UCL Institute of Education, UK
Beyond a positive stance: integrating technology is demanding on teachers' mathematical knowledge for teaching
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Brocardo, Joana
Escola Superior de Educação, IPS de Setúbal and UIDEF, Instituto de Educação, Universidade de Lisboa, Portugal
Tasks to develop flexible multiplicative reasoning
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Broley, Laura
Concordia University, Canada
(Legitimate peripheral) computational thinking in mathematics
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Brunetto, Domenico
Politecnico di Milano, Italy
Freshmen engineering students: are they all the same?
TWG 14 University Mathematics Education:  Paper presentations
 

Brunheira, Lina
Instituto de Educação da Universidade de Lisboa, Portugal
Constructing draggable figures using Geogebra: the contribution of the DGE for geometric structuring
TWG 4 Geometry:  Paper presentations
 

Buchbinder, Orly
University of New Hampshire, USA
Supporting classroom implementation of proof-oriented tasks: lessons from teacher researcher collaboration
TWG 1 Argumentation and Proof:  Paper presentations
 

Buforn, Àngela
University of Alicante, Spain
Characteristics of pre-service primary teachers’ noticing of students’ thinking related to fraction concept sub-constructs
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Bulien, Tone
University of Stavanger, Norway
Providing a tool for lesson planning in pre-service teacher’s education
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Büscher, Christian
TU Dortmund University, Germany
Common patterns of thought and statistics: accessing variability through the typical
TWG 5 Probability and Statistics Education:  Paper presentations
 

Caballero-Pérez, Mario
Center of Research and Advanced Estudies of the National Polytechnic Institute, Mexico
Causality and temporalization in the construction of reference systems for the treatment of variation: Socioepistemological study
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Poster presentations
 

Candeias, Rui
UIED/FCT/UNL, Portugal
Mathematics in the initial pre-service education of primary school teachers in Portugal: analysis of Gabriel Gonçalves proposal for the concept of unit and its application in solving problems with decimals
TWG 12 History in Mathematics Education:  Paper presentations
 

Capone, Roberto
University of Salerno, Italy
Using technology in Formative Assessment: Teachers beliefs
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Poster presentations
 

Carlsen, Louise Meier
University of Copenhagen, Denmark
A study of the development and evolvement of mathematics student teachers' knowledge on the implementation of CAS in the teaching of mathematics - a praxeological analysis
TWG 15 Teaching Mathematics with Technology and Other Resources:  Poster presentations
 

Carotenuto, Gemma
Università degli Studi di Salerno, Italy
Educating to rationality in a narrative context: an experimentation
TWG 9 Mathematics and Language:  Paper presentations
 

Carreira, Susana
University of Algarve, Portugal
Creating a color palette: the model, the concept, and the mathematics
TWG 6 Applications and Modelling:  Paper presentations
 

Carrillo, José
University of Huelva, Spain
Describing a secondary mathematics teacher’s specialised knowledge of functions 
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Carvajal, Johanna
UCL Institute of Education, UK
Exploring affective reactions of children to Scratch programming and mathematics: the case of Kim
TWG 8 Affect and Mathematical Thinking:  Poster presentations
 

Chandia, Eugenio
Universidad de Chile, Chile
Incorporating mathematical problem solving in the Chilean school curriculum
TWG 23 Implementation of Research Findings in Mathematics Education:  Poster session
 

Chan, Man Ching Esther
The University of Melbourne, Australia
Learning research in a laboratory classroom: Complementarity and commensurability in juxtaposing multiple interpretive accounts
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 

Chanudet, Maud
University of Geneva, Switzerland
Teachers' formative assessment practices: the case of an IBME-centered course
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Chellougui, Faïza
Faculty of sciences of Bizerte, Tunisia
The proof in formalism: Case of letters' logical status
TWG 14 University Mathematics Education:  Paper presentations
 

Chenevotot-Quentin, Françoise
Laboratoire de Didactique André Revuz (LDAR), Université d'Artois, Universités Cergy Pontoise, Paris Diderot, Paris Est Créteil, France
Pépite online automated assessment and student learning: the domain of equations for grade 8th
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Chiesi, Francesca
University of Florence, Italy
Do attitudes toward statistics change during an introductory statistics course? A study on Italian psychology students
TWG 5 Probability and Statistics Education:  Paper presentations
 

Chimoni, Maria
University of Cyprus, Cyprus
The effect of two intervention courses on students’ early algebraic thinking
TWG 3 Algebraic Thinking:  Paper presentations
 

Choppin, Jeffrey
University of Rochester, USA
Tensions between resource perspectives and trends in the design and dissemination of digital resources
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Chorlay, Renaud
ESPE de l'académie de Paris, France
Mathematical analysis of informal arguments: A case-study in teacher-training context
TWG 12 History in Mathematics Education:  Paper presentations
 

Chua, Boon Liang
National Institute of Education, Nanyang Technological University, Singapore
A framework for classifying mathematical justification tasks
TWG 1 Argumentation and Proof:  Paper presentations
 

Clarke, David
University of Melbourne, Australia
The lexicon project: examining the consequences for international comparative research of pedagogical naming systems from different cultures
TWG 11 Comparative Studies in Mathematics Education:  Paper presentations
 

Clark, Kathleen
Florida State University, USA
Primary source projects in an undergraduate mathematics classroom: A pilot case in a topology course
TWG 12 History in Mathematics Education:  Paper presentations
 

Clivaz, Stéphane
Lausanne University of Teacher Education, Switzerland
Analysing mathematics teacher learning in lesson study - a proposed theoretical framework
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Cohen, Dorit
Center for Educational Technology, Israel
Geometric constructions in a dynamic environment (GeoGebra): the case of in-service teachers
TWG 4 Geometry:  Paper presentations
 

Cohen-Eliyahu, Noa
The Hebrew University of Jerusalem, Israel
The role of design in conceptual change The case of proportional reasoning
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Conner, AnnaMarie
University of Georgia, USA
An application of Habermas’ rationality to the teacher’s actions: Analysis of argumentation in two classrooms
TWG 1 Argumentation and Proof:  Paper presentations
 

Conway, Katherine
Borough of Manhattan Community College, City University of New York, USA
Retention and access in online mathematics and science courses
TWG 14 University Mathematics Education:  Paper presentations
 

Cooper, Jason
Weizmann Institute of Science, Israel
A mathematics educator and a mathematician co-teaching mathematics – affordances for teacher education
TWG 14 University Mathematics Education:  Paper presentations
 

Corso, Luciana Vellinho
Universidade Federal do Rio Grande do Sul, Brazil
Working memory, number sense and arithmetical performance: relations between these domains
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Costa, Maria Cristina
Instituto Politécnico de Tomar, Portugal
Innovating teachers' practices: potentiate the teaching of mathematics through experimental activities
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Courtney, Scott
Kent State University, USA
Supporting teachers’ practices: A teacher educator-embedded professional development model
TWG 18 Mathematics Teacher Education and Professional Development:  Poster presentations
 

Cronin, Anthony
UCD, Ireland
In what ways do lecturers receive and use feedback from large first year mathematics classes?
TWG 14 University Mathematics Education:  Poster presentations
 

Cunningham, Rachel
Educational Research Centre, St. Patrick's College Campus, Ireland
Ireland's Junior Certificate mathematics examination through the lens of the PISA and TIMSS frameworks: Has Project Maths made any difference?
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Cusi, Annalisa
University of Turin, Italy
Designing and analysing the role of digital resources in supporting formative assessment processes in the classroom: the helping worksheets
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Daher, Wajeeh
An-Najah National University, Occupied Palestinian Territory
Positioning and emotions in learning algebra: The case of middle- achieving students
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Dahl, Bettina
Aalborg University, Denmark
Mathematics students' attitudes to group-based project exams compared to students in science and engineering
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Daina, Audrey
Université de Genève, Switzerland
From textbook to classroom: a research on teachers’ use of pedagogical resources in the context of primary school in the French speaking part of Switzerland
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Dalby, Diane
University of Nottingham, UK
Changing images of mathematics in the transition from school to vocational education
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Davies, Ben
Loughborough University, UK
A case for a new approach to establishing the validity of comparative judgement as an assessment tool for mathematics
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

de Abreu, Guida
Oxford Brookes University, UK
“I think that practice makes perfect”: Chinese parents' experiences of supporting their children's school mathematics learning in England
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

de Freitas, Elizabeth
Manchester Metropolitan University, UK
A course on the philosophy of mathematics for future teachers
TWG 12 History in Mathematics Education:  Paper presentations
 
Mathematical gestures: multitouch technology and the indexical trace
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

De Moraes Rocha, Katiane
École normale supérieure de Lyon, France
Documentational trajectory: a tool for analysing the genesis of a teacher's resource system across her collective work
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

De Vetten, Arjen
Vrije Universiteit Amsterdam, The Netherlands
Informal statistical inference and pre-service primary school teachers: the development of their content knowledge and pedagogical content knowledge during a teacher college intervention
TWG 5 Probability and Statistics Education:  Paper presentations
 

Delaney, Seán
Marino Institute of Education, Ireland
Children's performance on a mathematics task they were not taught to solve: A case study
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Demiray, Esra
Hacettepe University, Turkey
Pre-service middle school mathematics teachers' interpretation of statements regarding proof by contrapositive
TWG 1 Argumentation and Proof:  Paper presentations
 

Dempsey, Majella
Maynooth University, Ireland
Critical evaluation and design of mathematics tasks: pre-service teachers
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Di Martino, Pietro
University of Pisa, Italy
The role of affect in failure in mathematics at the university level: the tertiary crisis
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Di Paola, Benedetto
Università degli Studi Palermo, Italy
Cultural diversity as resource or obstacle for teaching practices in multicultural milieu: an experience of training course for Italian teachers about Chinese Shuxue
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 
Hierarchical and non-hierarchical clustering methods to study students algebraic thinking in solving an open-ended questionnaire
TWG 3 Algebraic Thinking:  Poster presentations
 

Diamantidis, Dimitris
National Kapodistrian University of Athens, Greece
Meaning-generation through an interplay between problem solving and Constructionism in the c-book technology environment
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Dibbs, Rebecca
Texas A&M University Commerce, USA
Transitioning from definitions to proof: exploring non-Euclidean geometry in a college geometry course
TWG 4 Geometry:  Paper presentations
 

Diez-Palomar, Javier
University of Barcelona, Spain
Exploring Roma learning mathematics: a sociomathematical view
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Domingos, António
Universidade Nova de Lisboa, Faculdade de Ciências e Tecnologia, Portugal
The complexity of mathematical thought and the quality of learning: portfolio assessment
TWG 21 Assessment in Mathematics Education:  Poster presentations
 

Donevska-Todorova, Ana
Humboldt-Universität zu Berlin, Germany
Learning mathematics with technology. A review of recent CERME research
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Dooley, Therese
Institute of Education, Ireland
Using variation theory to explore the reteaching phase of lesson study
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Poster presentations
 

Drageset, Ove Gunnar
UiT - The Arctic University of Norway, Norway
Changing classroom practice
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Drüke-Noe, Christina
Pädagogische Hochschule Weingarten, University of Education, Germany
Cognitive demand of mathematics tasks set in European statewide exit exams - Are some competences more demanding than others?
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Duranczyk, Irene
University of Minnesota, USA
Measuring gains in algebra knowledge at community colleges: Assessing the efficacy of the Algebra Pre-Calculus Readiness test
TWG 14 University Mathematics Education:  Poster presentations
 

Dyrvold, Anneli
Mathematics and Mathematical Statistics, Sweden
Which textual features are difficult when reading and solving of mathematics tasks?
TWG 9 Mathematics and Language:  Poster presentations
 

Eckert, Andreas
Linnaeus University, Sweden
Agency as a tool in design research collaborations
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Eikset, Andrea
Western Norway University of Applied Sciences, Norway
Reflections of Fröbel in discourses about mathematics in Scandinavian early childhood education and care
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Poster presentations
 

Ejersbo, Lisser Rye
Aarhus University, Denmark
From theory to praxis
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Elicer, Raimundo
Roskilde University, Denmark
Conditional probability as a decision-making tool: a didactic sequence
TWG 5 Probability and Statistics Education:  Paper presentations
 

ElKasti, Houssam
Lebanese University, Lebanon
Effect of GeoGebra collaborative and iterative professional development on in-service secondary mathematics teachers' practices
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Elofsson, Jessica
Linköping University, Dept. of Behavioural Sciences and Learning, Sweden
5- and 6-year-old children´s number line estimation patterns
TWG 2 Arithmetic and Number Systems:  Poster presentations
 

Emprin, Fabien
Universite de Reims, France
Teaching geometry to students (from five to eight years old) " All that is curved and smooth is not a circle"
TWG 4 Geometry:  Paper presentations
 

Engvall, Margareta
Linköping University, Dept. of Behavioural Sciences and Learning, Sweden
Teachers learning through participatory action research - developing strategies in order to enhance students' language and communication within mathematics in multilingual primary classrooms
TWG 18 Mathematics Teacher Education and Professional Development:  Poster presentations
 

Erath, Kirstin
TU Dortmund University, Germany
Implicit and explicit processes of establishing explaining practices - Ambivalent learning opportunities in classroom discourse
TWG 9 Mathematics and Language:  Paper presentations
 

Eriksen, Elisabeta
Oslo and Akershus University College of Applied Sciences, Norway
From emergency sirens to birdsong
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Espinoza-Vásquez, Gonzalo
Pontifical Catholic University of Valparaíso, Chile
Use of analogies in teaching the concept of function: relation between Knowledge of Topics and Knowledge of Mathematics Teaching
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Essonnier, Nataly
University Claude Bernard Lyon 1, France
Factors impacting on the collaborative design of digital resources
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Fahse, Christian
University of Koblenz-Landau, Germany
Issues of a quasi-longitudinal study on different types of argumentation in the context of division by zero
TWG 1 Argumentation and Proof:  Paper presentations
 

Fallas Soto, Rodolfo
Center of Research and Advances Studies of National Polytechnic Institute, Mexico
Variational strategies on the study of the existence and uniqueness theorem for ordinary differential equations
TWG 12 History in Mathematics Education:  Paper presentations
 

Farah, Lynn
American University of Paris, France
The organization of study in French business school preparatory classes
TWG 14 University Mathematics Education:  Paper presentations
 

Farrugia, Marie Therese
University of Malta, Malta
Young children's appropriation of mathematical discouse: learning subtraction in a plurilingual classroom
TWG 9 Mathematics and Language:  Paper presentations
 

Fattoum, Fatma
Virtual University of Tunis, Tunisia
Reflection on didactical design for action: the case of convergence of sequences and of complex numbers
TWG 14 University Mathematics Education:  Poster presentations
 

Fauskanger, Janne
University of Stavanger, Norway
Core practices and mathematical tasks of teaching in teacher education: What can be learned from a challenging case?
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Fernández, Ceneida
Universidad de Alicante, Spain
Characteristics of a learning environment to support prospective secondary mathematics teachers' noticing of students' thinking related to the limit concept
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Fernández-León, Aurora
University of Seville, Spain
How mathematicians conjecture and prove: an approach from mathematics education
TWG 14 University Mathematics Education:  Paper presentations
 

Ferrando, Irene
Universitat de València, Spain
Exploratory study of teacher's interventions in a modelling task
TWG 6 Applications and Modelling:  Paper presentations
 

Ferrari, Giulia
University of Torino, Italy
Diagrams and mathematical events: Encountering spatio-temporal relationships with graphing technology
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Ferrari, Pier Luigi
Università del Piemonte Orientale, Italy
Language in argumentation and solution of problems with graphs
TWG 9 Mathematics and Language:  Paper presentations
 

Ferreira, Nadia
Instituto de Educação-Universidade de Lisboa, Portugal
Actions of a prospective teacher in different moments of practice: The case of Berta
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Ferretti, Federica
University of Bologna, Italy
A vertical analysis of difficulties in mathematics by secondary school to university level; some evidences stems from standardized assessment
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Fetzer, Marei
Goethe-University Frankfurt, Germany
Talking with objects
TWG 9 Mathematics and Language:  Paper presentations
 

Feudel, Frank
University of Paderborn, Germany
Students' interpretation of the derivative in an economic context
TWG 14 University Mathematics Education:  Paper presentations
 

Finesilver, Carla
King's College London, UK
Emerging and developing multiplicative structure in low-attaining students' representational strategies: Four key representation types
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Flesvig, Sindre S.
Hedmark University of Applied Sciences, Norway
Pre-service teachers using the Knowledge Quartet as a tool to analyse and reflect on their own teaching
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Flores, Cláudia
Federal University of Santa Catarina, Brazil
Being in the diversity and going through the infinity
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Poster presentations
 

Francis, Krista
University of Calgary, Canada
Number, arithmetic, multiplicative thinking and coding
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Fredriksen, Helge
University of Agder, Norway
Exploring tensions in a mathematical course for engineers utilizing a flipped classroom approach
TWG 14 University Mathematics Education:  Paper presentations
 

Friesen, Rachel-Ann
Technical University, Germany
Collaborative learning in multigrade mathematics education at primary level
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Poster presentations
 

Frischemeier, Daniel
Paderborn University, Germany
Stepwise development of statistical literacy and thinking in a statistics course for elementary preservice teachers
TWG 5 Probability and Statistics Education:  Paper presentations
 

Fujita, Taro
University of Exeter, UK
Dialogic proceses in collective geometric thinking: a case of defining and classifying quadrilaterals
TWG 4 Geometry:  Paper presentations
 

Funghi, Silvia
University of Modena and Reggio Emilia, Italy
Primary future teachers' expectations towards development courses on mathematics teaching
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Fyhn, Anne Birgitte
UiT-The Arctic University of Norway, Norway
How Sámi teachers’ development of a teaching unit influences their self-determination
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Gabel, Mika
Tel Aviv University, Israel
The flow of a proof - Establishing a basis of agreement
TWG 1 Argumentation and Proof:  Paper presentations
 

Gaidoschik, Michael
Free University of Bozen/Bolzano, Italy
How lower-achieving children cope with derived facts-based teaching of basic multiplication: Findings from a design research study
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Gaio, Aaron
Universtity of Palermo, Italy
Programming for 3rd graders, Scratch-based or unplugged?
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

García González, María del Socorro
Research Centre of Mathematics Education, Autonomous University of Guerrero, Mexico
A characterisation of attitude grounded on proportionality
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Garcia Moreno-Esteva, Enrique
University of Helsinki, Dept. of Teacher Education, Finland
Identifying key visual-cognitive processes in students' interpretation of graph representations using eye-tracking data and math/machine learning based data analysis
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Gärtner, Hanna
Goethe-University, Germany
Evaluation of a discovery, inquiry- and project-based learning program
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Gea, Maria M.
University of Granada, Spain
Variables characterizing correlation and regression problems in the Spanish high school textbooks
TWG 5 Probability and Statistics Education:  Paper presentations
 

Georget, Jean-Philippe
Normandie Univ Unicaen, France
Networked theories for a didactical study of mathematics teachers communities
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 

Geraniou, Eirini
University College London Institute of Education, UK
Investigating the integration of a digital resource in the mathematics classroom: the case of a creative electronic book on Reflection
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Ghedamsi, Imène
IPEIT, Tunisia
A micro-model of didactical variables to explore the mathematical organization of complex numbers at upper secondary level
TWG 14 University Mathematics Education:  Paper presentations
 

Gifford, Sue
University of Roehampton, UK
Making numbers: issues in using manipulatives with young children
TWG 13 Early Years Mathematics:  Paper presentations
 

Gijsbers, Dié
Eindhoven University of Technology, The Netherlands
Context based tasks on differential equations to improve students' beliefs about the relevance of mathematics
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Gil Clemente, Elena
Universidad de Zaragoza, Spain
Combining historical, foundational, and developmental insights to build children´s first steps in mathematics
TWG 13 Early Years Mathematics:  Paper presentations
 

Godfrey, Alison
University of Leicester, UK
Factors influencing the developing effectiveness of early career teachers' mathematics teaching - initial findings
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Gokce, Rukiye
Pamukkale University, Turkey
Middle school mathematics teachers’ pedagogical content knowledge in relation to statistical reasoning
TWG 5 Probability and Statistics Education:  Paper presentations
 

Golding, Jennie
UCL Institute of Education, UK
Professional association activity: what can it offer teachers and their students?
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Gómez-Chacón, Inés M.
Universidad Complutense de Madrid, Spain
Regression trees and decision rules applied to the study of perplexity: Issues and methods
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

González-Martín, Alejandro S.
Université de Montréal, Canada
How are Calculus notions used in engineering? An example with integrals and bending moments
TWG 14 University Mathematics Education:  Paper presentations
 

González, Orlando
Assumption University, Thailand
Using sport-related socially open-ended problems to coordinate decision-making, variability modeling and value awareness
TWG 5 Probability and Statistics Education:  Paper presentations
 

Gosztonyi, Katalin
Eötvös Loránd University, Hungary
Understanding didactical conceptions through their history: a comparison of Brousseau's and Varga's experimentations
TWG 12 History in Mathematics Education:  Paper presentations
 

Grapin, Nadine
Université Paris Est Créteil, France
Using external assessments for improving assessment practices of primary school teachers: a first study and some methodological questions
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Gray, James
Oslo and Akershus University College of Applied Sciences, Norway
Khan Academy as a resource for pre-service teachers: a controlled study
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Greefrath, Gilbert
University of Muenster, Germany
Modelling problems in German grammar school leaving examinations (Abitur) – theory and practice
TWG 6 Applications and Modelling:  Paper presentations
 

Grønbæk, Niels
University of Copenhagen, Denmark
Out- and insourcing, an analysis model for use of instrumented techniques
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Grothérus, Annika
Linköping University, Sweden
Lower secondary students' experiences of outdoor learning in mathematics - impact on self-regulation and mathematical proficiency
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Gruenig, Fabian
University of Education, Germany
Teaching mathematics with multimedia-based representations − what about teachers' competencies?
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Grundén, Helena
Linnaeus University, Sweden
Practice of educational planning in mathematics - meaning and relations
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Guerreiro, Helena Gil
Agrupamento de Escolas Braamcamp Freire, UIDEF, Instituto de Educação, Universidade de Lisboa, Portugal
Fostering rational numbers understanding through percentage
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Guerrero-Ortiz, Carolina
Pontificia Universidad Católica de Valparaíso, Chile
Using auxiliary material for modelling
TWG 6 Applications and Modelling:  Paper presentations
 

Guille-Biel Winder, Claire
COPIRELEM, France
A theoretical framework for analyzing training situations in mathematics teacher education
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Gurhy, Ann Marie
Dublin City University, Ireland
Using assessment for learning to enhance mathematics education in the primary school: Irish students' perspectives.
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Gustafsson, Patrik
Mälardalen University, Sweden
Exploring a framework for technology integration in the mathematics classroom
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Gutiérrez, Angel
Universidad de Valencia, Spain
When the theoretical model does not fit our data: A process of adaptation of the Cognitive Demand model
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 

Gutiérrez-Soto, Juan
Universitat de València, Departamento de Didáctica de la Matemática, Spain
Number line as a conceptual and didactical resource for teaching fractions using applets
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Haataja, Eeva
University of Helsinki, Finland
Finnish educators’ conceptions of the social-emotional needs of mathematically gifted high school students
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Hahn, Corinne
ESCP Europe, France
Metaphorical representations of multiface statistical concepts:  An access to implicit dominant interpretation by teachers?
TWG 5 Probability and Statistics Education:  Poster presentations
 

Hahn, Thomas
University Kassel, Germany
Belief change of teachers in PD course with reflecting on students' learning results
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Hamann, Tanja
University of Hildesheim, Germany
"Sickened by set theory?" - About New Math in German primary schools
TWG 12 History in Mathematics Education:  Poster presentations
 

Hanazono, Hayato
University of Tsukuba, Japan
The qualitative differences in generative characteristic of the aesthetic sensibility: analysis of learners’ problem solving
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Hanke, Erik
University of Bremen, Germany
Students’ view of continuity – An empirical analysis of mental images and their usage
TWG 14 University Mathematics Education:  Paper presentations
 

Hannula, Jani
University of Helsinki, Finland
Subject matter knowledge and pedagogical content knowledge in prospective mathematics teachers’ learning diaries
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Hannula, Markku S.
University of Helsinki, Finland
Identifying subgroups of CERME affect research papers
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Harbison, Lorraine
DCU, Ireland
The application of the universal design for learning framework to task design in order to support lower attaining children in the primary school mathematics classroom
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Poster presentations
 

Häsel-Weide, Uta
University of Paderborn, Institute of Mathematics, Germany
Mistakes as occasions for productive interactions in inclusive mathematics classrooms
TWG 9 Mathematics and Language:  Paper presentations
 

Haser, Çigdem
Middle East Technical University, Turkey
Tracing mathematics-related belief change in teacher education programs
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Haspekian, Mariam
University Paris Descartes, France
Analyzing verbal interactions in mathematics classroom: connecting different research fields
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 

Heil, Cathleen
Leuphana University, Institute of Mathematics and its Didactics, Germany
Double perspective taking processes of primary children - adoption and application of a psychological instrument
TWG 4 Geometry:  Paper presentations
 

Hein, Kerstin
TU Dortmund University, Germany
Fostering and investigating students' pathways to formal reasoning: A design research project on structural scaffolding for 9th graders
TWG 1 Argumentation and Proof:  Paper presentations
 

Hemmi, Kirsti
Åbo Akademi University, Finland
Misconceptions and developmental proof
TWG 1 Argumentation and Proof:  Paper presentations
 

Herrelko, Janet
University of Dayton, USA
Preparing preservice teachers to use instructional technology:  How much development can happen in one semester?
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Heyd-Metzuyanim, Einat
Technion, Israel
Shifting frames - A teacher's change towards explorative instruction
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Hoch, Hodaya (Liora)
Orot Israel College, Israel
The reasons underlying mathematics teachers' decisions about the teaching objectives of a mathematical task
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Hochmuth, Reinhard
Leibniz University Hannover, Germany
“Qualitative learning jumps” and “mathematical organizations” as analytical lenses for discussing transition issues
TWG 14 University Mathematics Education:  Paper presentations
 

Hofmann, Rita
University of Koblenz-Landau, Campus Landau, Germany
Assessment of students' thinking when working with graphs of functions - Promoting pre-service teachers' diagnostic competence
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Hogstad, Ninni Marie
University of Agder, Norway
A digital tool for applying integrals in a kinematic simulation: A perspective on instrumental genesis, epistemic value and semiotic potential
TWG 14 University Mathematics Education:  Paper presentations
 

Hohenwarter, Judith
Johannes Kepler University, Austria
Math teachers' adventure of ICT integration: from an open online course towards an online teacher community
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Horoks, Julie
Laboratoire de didactique André Revuz, France
Assessment in mathematics as a lever to promote students’ learning and teachers’ professional development
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Hoth, Jessica
University of Vechta, Germany
Situation-specific diagnostic competence of mathematics teachers - a qualitative supplementary study of the TEDS-Follow-Up project
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Houdement, Catherine
Laboratoire de Didactique André Revuz (LDAR-EA 4434), France
Traveling in spatiality, in spatial sense
TWG 4 Geometry:  Paper presentations
 

Howard, Emma
University College Dublin, Ireland
Identifying the reasons behind students’ engagement patterns
TWG 16 Learning Mathematics with Technology and Other Resources:  Poster presentations
 

Hoyos, Veronica
National Pedagogical University, Mexico, Mexico
Epistemic and semiotic perspectives in the analysis of the use of digital tools for solving optimization problems in the case of distance teacher education
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Hubeňáková, Veronika
Pavol Jozef Safarik University, Faculty of Science, Slovakia
Pre-service mathematics teachers: How to make them ready to be ready
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Hundeland, Per Sigurd
University of Agder, Norway
A kindergarten teacher's revealed knowledge in orchestration of mathematical activities
TWG 13 Early Years Mathematics:  Paper presentations
 

Hyland, Diarmaid
Dublin City University, Ireland
Investigating students' difficulties with differential equations in physics
TWG 14 University Mathematics Education:  Poster presentations
 

Ineson, Gwen
Brunel University London, UK
What knowledge is necessary to encourage mathematical talk?
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Ingram, Jenni
University of Oxford, UK
Revisiting the roles of interactional patterns in mathematics classroom interaction
TWG 9 Mathematics and Language:  Paper presentations
 

Ioannou, Marios
University of the West of England (Alexander College), Cyprus
Investigating the discursive shift in the learning of Group Theory: Analysis of some interdiscursive commognitive conflicts
TWG 14 University Mathematics Education:  Paper presentations
 

Isaev, Viktor
University of Kassel, Germany
Measuring beliefs concerning the double discontinuity in secondary teacher education
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Isiksal, Mine
Middle East Technical University, Turkey
The role of definitions on classification of solids including nonprototype examples: The case of cylinder and prism
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Isler, Isil
Middle East Technical University, Turkey
Grade 6 students' abilities to represent functional relationships
TWG 3 Algebraic Thinking:  Paper presentations
 

Istúriz, Maitane P.
University of Cantabria, Spain
Kids Inspiring Kids for STEAM (KIKS)
TWG 11 Comparative Studies in Mathematics Education:  Poster presentations
 

Ivars, Pere
Universidad de Alicante, Spain
Using a fraction Learning Trajectory as a tool to develop pre-service primary teachers' noticing of students' fractional reasoning
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Jackson, Colin
Sheffield Hallam University, UK
Social class and "ability" grouping in mathematics in English secondary schools: a review
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Jankvist, Uffe Thomas
Aarhus University, Denmark
The notion and role of "detection tests" in the Danish upper secondary "maths counsellor" programme
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Janßen, Thomas
University of Bremen, Germany
Using tangible technology to multimodally support algebra learning: The MAL project
TWG 16 Learning Mathematics with Technology and Other Resources:  Poster presentations
 

Jaworski, Barbara
Loughborough University, UK
Theorising university mathematics teaching: The teaching triad within an activity theory perspective
TWG 14 University Mathematics Education:  Paper presentations
 

Jedtke, Elena
University of Münster, Germany
Self-assessment and achievement in mathematics education - the influence of immediate feedback included in a computer-based learning environment. Concept of a research study
TWG 16 Learning Mathematics with Technology and Other Resources:  Poster presentations
 

Jentsch, Armin
University of Hamburg, Germany
Measuring instructional quality in mathematics education
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Joffredo-Le Brun, Sophie
University of western Brittany, France
Continuity of the students's experience and systems of representation, an example of teaching and learning in mathematics first grade students.
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Johnson, Heather
University of Colorado Denver, USA
When a critical aspect is a conception: Using multiple theories to design dynamic computer environments and tasks to promote secondary students’ discernment of covariation
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 

Johnson, Patrick
University of Limerick, Ireland
Examining the role of group work as an effective instructional strategy when teaching problem solving
TWG 6 Applications and Modelling:  Paper presentations
 

Jones, Keith
University of Southampton, UK
Diagrams in students' proving activity in secondary school geometry
TWG 4 Geometry:  Poster presentations
 

Jovignot, Julie
Lycée Lamartine, France
Praxeological analysis: the case of ideals in Ring Theory Praxeological analysis: the case of ideals in Ring Theory
TWG 14 University Mathematics Education:  Paper presentations
 

Jukic Matic, Ljerka
University of Osijek, Department of Mathematics, Croatia
Teacher’s pedagogical design capacity and mobilization of textbook
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Poster presentations
 

Jung, Judith
TU Dresden, Germany
Content-related and social participation in inclusive mathematics education
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Juter, Kristina
Kristianstad University, Sweden
University students' understandings of concept relations and preferred representations of continuity and differentiability
TWG 14 University Mathematics Education:  Paper presentations
 

Kaenders, Rainer
University of Bonn, Germany
Historical methods for drawing anaglyphs in geometry teaching
TWG 12 History in Mathematics Education:  Paper presentations
 

Kaiser, Gabriele
University of Hamburg, Germany
The use of heuristic strategies in modelling activities
TWG 6 Applications and Modelling:  Paper presentations
 

Kallweit, Michael
Ruhr-Universität Bochum, Germany
Engineering mathematics between competence and calculation
TWG 14 University Mathematics Education:  Paper presentations
 

Kaplan, Gözde
Middle East Technical University, Turkey
Preservice mathematics teachers' views about planning the assessment
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Karagoz Akar, Gulseren
Bogazici University, Turkey
A conception of between-state ratio in fraction form
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Karatas, Firdevs İclal
Middle East Technical University, Turkey
The investigation of mathematical problem solving processes of fifth grade students in small groups
TWG 6 Applications and Modelling:  Paper presentations
 

Kasoka, Dun Nkhoma
University of Malawi, Malawi
Preparing teachers for teaching: does initial teacher education improve mathematical knowledge for teaching?
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Kaspersen, Eivind
Norwegian University of Science and Technology, Norway
The association between engineering students’ self-reported mathematical identities and average grades in mathematics courses
TWG 14 University Mathematics Education:  Paper presentations
 

Kawazoe, Mitsuru
Osaka Prefecture University, Japan
A practical study of a design of university mathematics courses for the humanities and social sciences students
TWG 14 University Mathematics Education:  Poster presentations
 

Kayali, Lina
University of East Anglia, UK
"One of the beauties of Autograph is ... that you don't really have to think": Integration of resources in mathematics teaching
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Keffe, Paraskevi
University of Thessaly, Greece
Teaching self-regulation strategies with SOLVE IT to two students with learning disabilities: Effects on mathematical problem-solving performance
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Kenton, Dianne
Brock University, Canada
Language and risk literacy
TWG 9 Mathematics and Language:  Poster presentations
 

Keuch, Sarah
Technische Universität Chemnitz, Germany
The duck is the biggest - kindergartners talking about measurement and magnitudes
TWG 9 Mathematics and Language:  Paper presentations
 

Khalloufi Mouha, Faten
Faculté des Sciences Bizerte, Tunisia
Constructing mathematical meaning of the cosine function using covariation between variables in a modeling situation in Cabri.
TWG 9 Mathematics and Language:  Paper presentations
 

Khechine, Hichem
ISEFC, Tunisia
Connections between approximating irrationals by a sequence of decimals and introducing the notion of convergence
TWG 14 University Mathematics Education:  Poster presentations
 

Kilic, Hulya
Yeditepe University, Turkey
Pre-service teachers' reflections on task design and implementation
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Kimeswenger, Barbara
Private University College of Education of the Diocese of Linz, Austria
Identifying and assessing quality criteria for dynamic mathematics materials on platforms
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Kingji Kastrati, Jeta
University of Ljubljana, Slovenia
Comparison of Kosovan and Polish preservice teachers' knowledge of fractions
TWG 11 Comparative Studies in Mathematics Education:  Paper presentations
 

Kirez, Busra
Hacettepe University, Turkey
The mathematical values in the Turkish middle school mathematics applications course curriculum
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Kirsted, Katrine
Aarhus University, Denmark
Theoretical constructs for early intervention programs in mathematics: who cares? - A Danish example
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Kirsten, Katharina
University of Münster, Germany
Identifying phases and activities in the proving process of first-year undergraduates
TWG 1 Argumentation and Proof:  Poster presentations
 

Kjeldsen, Tinne Hoff
University of Copenhagen, Denmark
Students' video tutorials as a means for supporting and analyzing their reflections on the limit concept
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Klaren, Michiel
Eindhoven University of Technology, The Netherlands
Autism and mathematics education
TWG 4 Geometry:  Paper presentations
 

Kleve, Bodil
Oslo and Akershus University of Applied Sciences, Norway
The interplay between sociomathematical norms and students' use of mental strategies or standard algorithms
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Kohanova, Iveta
Comenius University, Faculty of Mathematics, Physics and Informatics, Slovakia
Preliminary testing of apps in mathematics, based on international collaborative work
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Koichu, Boris
Technion - Israel Institute of Technology, Israel
Implementation enterprise through the lens of a theory of diffusion of innovations: A case of online problem-solving forums
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Koljonen, Tuula
Malardalen University, Sweden
Finnish teaching materials in the hands of a Swedish teacher: The telling case of Cecilia
TWG 11 Comparative Studies in Mathematics Education:  Paper presentations
 

Kollosche, David
Universität Potsdam, Germany
The socio-politics of teacher explanation in mathematics education
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Komatsu, Kotaro
Shinshu University, Japan
Proofs and refutations in school mathematics: A task design in dynamic geometry environments
TWG 1 Argumentation and Proof:  Paper presentations
 

Kondratieva, Margo
Memorial University, Canada
A praxeological approach to Klein’s plan B: cross-cutting from Calculus to Fourier Analysis
TWG 14 University Mathematics Education:  Paper presentations
 

Kontorovich, Igor'
The University of Auckland, New Zealand
When lecturers disagree on mathematics: The case of the root concept
TWG 14 University Mathematics Education:  Paper presentations
 

Kónya, Eszter
University of Debrecen, Hungary
Can teacher trainees use inductive arguments during their problem solving activity?
TWG 1 Argumentation and Proof:  Paper presentations
 

Kortemeyer, Jörg
University of Paderborn, Germany
The interface between mathematics and engineering - problem solving processes for an exercise on oscillating circuits using ordinary differential equations
TWG 14 University Mathematics Education:  Paper presentations
 

Korten, Laura
TU Dortmund University, Germany
The fostering of flexible mental calculation competences in an inclusive mathematics classroom during Mutual Learning takes place
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Kouki, Rahim
Université de Tunis El Manar, Tunisia
Taylor series: from history to teaching
TWG 14 University Mathematics Education:  Poster presentations
 

Kouropatov, Anatoli
Levinsky College of Education, Israel
Combining two theories in the design for learning about integrals
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 

Krause, Christina M.
University of Duisburg-Essen, Germany
DeafMath: Exploring the influence of sign language on mathematical conceptualization
TWG 9 Mathematics and Language:  Paper presentations
 

Kristinsdóttir, Jónína Vala
University of Iceland, Iceland
Collaborative research in in-service teacher professional development
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Krosanke, Nadine
University of Hamburg, Germany
Professional competences of future mathematics teachers concerning the role of language in mathematics teaching
TWG 9 Mathematics and Language:  Poster presentations
 

Kumsa, Abraham
Stockholm University, Department of Mathematics and Science education, Sweden
Obstacles to students' understanding of the limit concept
TWG 14 University Mathematics Education:  Paper presentations
 

Kürten, Ronja
University of Münster, Germany
Self-efficacy of engineering students in the introductory phase of studies
TWG 14 University Mathematics Education:  Paper presentations
 

Kuzle, Ana
University of Potsdam, Germany
From theory through collaboration into practice: designing a problem solving curriculum for grade 6 students
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Kuzniak, Alain
Paris Diderot University, France
On dialectic and dynamic links between the Mathematical Working Space model and practice in the teaching and learning of mathematics
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 
The Mathematical Working Space model: An open and adaptable theoretical framework?
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Poster presentations
 

Kynigos, Chronis
National and Kapodistrian University of Athens, Greece
Constructing the shortest path on a cylindrical surface
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 
Teachers designing e-books to foster creative mathematical thinking: the case of curvature
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Lada, Magdalini
Norwegian University of Science and Technology, Norway
The Flipped Learning Model in teaching abstract algebra
TWG 14 University Mathematics Education:  Poster presentations
 

Lake, Elizabeth
UCL Institute of Education, UK
To err is human. The management and emotional implications of teacher error
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Lane, Ciara
University of Limerick, Ireland
Students' images of mathematics: the role of parents' occupation
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Lange, Troels
Bergen University College, Norway
(Wanting to do) Ethical research in a shifting context
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Lantau, Jean-Marie
University of Kaiserslautern, Germany
Mathematical modelling of dynamical systems and implementation at school
TWG 6 Applications and Modelling:  Paper presentations
 

Lara Solís, José Hugo
Benemérita Universidad Autónoma de Puebla, Mexico
Self-regulated learning and metacognition to enhance translation of natural language to algebraic language in secondary school students
TWG 3 Algebraic Thinking:  Poster presentations
 

Larsen, Claus
Christianshavns Gymnasium, Denmark
Coaching and engaging. Developing teaching with CAS in high school
TWG 15 Teaching Mathematics with Technology and Other Resources:  Poster presentations
 

Leavy, Aisling
Mary Immaculate College, Ireland
Insights into the approaches of young children when making informal inferences about data
TWG 5 Probability and Statistics Education:  Paper presentations
 

Lecorre, Thomas
University Grenoble-Alpes, France
Q² a game used in a task design of the double quantification
TWG 14 University Mathematics Education:  Paper presentations
 

Lembrér, Dorota
Faculty of Education, Bergen University College, Norway
Polish parents and mathematics education in Swedish preschools
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Lemmo, Alice
Università di Palermo, Italy
From  paper and pencil-  to Computer-based assessment: some issues raising in the comparison
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Levenson, Esther
Tel Aviv University, Israel
Preschool teachers' variations when implementing a patterning task
TWG 13 Early Years Mathematics:  Paper presentations
 

Lewis, Gareth
University of Leicester, UK
Emotions and problem solving by prospective primary school teachers
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Liakos, Yannis
University of Agder, Norway
Mathematical modeling and competencies for biology students
TWG 6 Applications and Modelling:  Poster presentations
 

Lieban, Diego
Johannes Kepler University, Austria
Geometric modelling inspired by Da Vinci: shaping and adding movement using technology and physical resources
TWG 6 Applications and Modelling:  Paper presentations
 

Liebendörfer, Michael
Universität Hannover, Germany
A framework for goal dimensions of mathematics learning support in universities
TWG 14 University Mathematics Education:  Paper presentations
 

Liljedahl, Peter
Simon Fraser University, Canada
On the edges of flow: Student engagement in problem solving
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Liljekvist, Yvonne
Department of Mathematics and Computer Science, Sweden
Mathematics teachers’ re-sourcing and use of social media: can the ‘prosumer’ concept convey what’s going on?
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Poster presentations
 

Lindenbauer, Edith
University College of Education Upper Austria, Austria
Using dynamic worksheets to support functional thinking in lower secondary school
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Lindenskov Tamborg, Andreas
Metropolitan University College, Denmark
Planning geometry lessons with learning platforms
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Lisarelli, Giulia
University of Florence, Department of Mathematics, Italy
Students' use of movement in the exploration of dynamic functions
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Llanos, Viviana Carolina
Universidad Nacional del Centro de la Provincia de Buenos Aires (UNICEN), Argentina
Changes in the images and arguing from the mathematics textbooks for the secondary school in Argentina along 67 years
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Poster presentations
 

Loeng, Ratha
Paris Diderot-Paris 7 University, France
Learning sine and cosine in french secondary schools
TWG 4 Geometry:  Paper presentations
 

Ludes, Peter
Technical University of Dresden, Germany
Fostering of interdisciplinary learning through basic education in computer science in mathematics in primary education.
TWG 9 Mathematics and Language:  Paper presentations
 

Ludwig, Matthias
Goethe University Frankfurt, Germany
Examining motivation in mobile app-supported math trail environments
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Lüken, Miriam
Bielefeld University, Germany
Early years mathematics learning - Comparing traditional and inclusive classroom settings
TWG 13 Early Years Mathematics:  Poster presentations
 

Maffia, Andrea
University of Modena and Reggio Emilia, Italy
Seeking symmetry in distributive property: children developing structure sense in arithmetic
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Mai, Tobias
University of Paderborn, Germany
A vector is a line segment? - Students' concept definitions of a vector during the transition from school to university
TWG 14 University Mathematics Education:  Paper presentations
 

Maj-Tatsis, Bozena
University of Rzeszow, Poland
Discovering regularities in a geometrical objects environment
TWG 13 Early Years Mathematics:  Paper presentations
 

Malara, Nicolina A.
University of Modena & Reggio E., Italy
Integrating teachers institutional and informal mathematics education: the case of ‘Progetto ArAl’ group in Facebook
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Mamba, Florence
University of Malawi, Malawi
A preservice secondary school teacher’s pedagogical content knowledge for teaching algebra
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Marmur, Ofer
Technion - Israel Institute of Technology, Israel
What can calculus students like about and learn from a challenging problem they did not understand?
TWG 14 University Mathematics Education:  Paper presentations
 

Martignone, Francesca
Università del Piemonte Orientale, Italy
Analysis of mathematics standardized tests: examples of tasks for teachers
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Martinez Sierra, Gustavo
Research Centre of Mathematics Education, Mathematics Faculty, Autonomous University of Guerrero, Mexico
Exploring daily emotions of a mathematics teacher in classroom: Case of Christian
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Martínez, Alfredo
Cinvestav-IPN, Mexico
Teaching kinematics using history of mathematics
TWG 12 History in Mathematics Education:  Paper presentations
 

Maschietto, Michela
University of Modena e Reggio Emilia, Italy
The Pythagorean theorem in mathematics laboratory
TWG 4 Geometry:  Paper presentations
 

Mata-Pereira, Joana
Instituto de Educação, Universidade de Lisboa, Portugal
Principles towards justification: an episode about equations in grade 7
TWG 1 Argumentation and Proof:  Paper presentations
 

McLean, Jeffrey
St Lawrence University, USA
Students' conception of a sample's relation to the population when constructing models of resampling
TWG 5 Probability and Statistics Education:  Paper presentations
 

Meaney, Tamsin
Bergen University College, Norway
Supporting young children's mathematical register learning in two languages: ICT possibilities
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Poster presentations
 

Meehan, Maria
University College Dublin, Ireland
"What you see and don't see, shapes what you do and don't do": noticing in first year mathematics lectures
TWG 14 University Mathematics Education:  Paper presentations
 

Meletiou-Mavrotheris, Maria
European University Cyprus, Cyprus
At-distance college-level training in statistical methods: Prospects and considerations
TWG 5 Probability and Statistics Education:  Paper presentations
 

Mellone, Maria
University of Naples Federico II, Italy
Prospective teachers interpret student responses: Between assessment, educational design and research
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Mellroth, Elisabet
Karlstad University, Sweden
The suitability of rich learning tasks from a pupil perspective
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Mesnil, Zoé
Université Paris Est Créteil, Laboratoire de Didactique André Revuz, France
A reference for studying the teaching of logic
TWG 1 Argumentation and Proof:  Paper presentations
 

Michailidou, Theognosia
University of Leeds, UK
Non-mathematics majors doing statistics: Factors behind performance
TWG 5 Probability and Statistics Education:  Poster presentations
 

Miragliotta, Elisa
University of Ferrara, Italy
Visuo-spatial abilities and geometry: a first proposal of a theoretical framework for interpreting processes of visualization
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Mischau, Anina
Freie Universität Berlin, Germany
Importance and possibility of integrating gender competence as a key qualification in mathematics teacher education
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Misfeldt, Morten
Aalborg University, Denmark
Mapping the logics in practice oriented competence development
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Miyakawa, Takeshi
Joetsu University of Education, Japan
Evolution of proof form in Japanese geometry textbooks
TWG 1 Argumentation and Proof:  Paper presentations
 

Mizzi, Angel
University of Duisburg-Essen, Germany
On the nature of spatial metaphors: dimensions of spatial metaphors and their use among fifth graders
TWG 9 Mathematics and Language:  Paper presentations
 

Modeste, Simon
Université de Montpellier, IMAG - UMR CNRS 5149, France
Algorithmics in secondary school: A comparative study between Ukraine and France
TWG 11 Comparative Studies in Mathematics Education:  Paper presentations
 

Möller, Regina D.
University of Erfurt, Germany
The concept of infinity - different meanings through the centuries
TWG 12 History in Mathematics Education:  Paper presentations
 

Montecino, Alex
Aalborg University, Denmark
The mathematics teacher’s quasi-Darwinism. Problematizing the mathematics education research
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Montone, Antonella
University of Bari, Italy
The design of a teaching sequence on axial symmetry, involving a duo of artefacts and exploiting the synergy resulting from alternate use of these artefacts
TWG 4 Geometry:  Paper presentations
 

Montoya Delgadillo, Elizabeth
Pontificia Universitaria Católica de Valparaíso, Chile
Choosing a Mathematic Working Space in a modelling task: the influence of teaching
TWG 6 Applications and Modelling:  Paper presentations
 

Moomaw, Sally
University of Cincinnati, USA
Teddy bear preschool mathematics assessment: Validation of a constructivist game- and story-based measure
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Morais, Cristina
Externato da Luz, Portugal
Models’ use and adaptation aiming at conceptual understanding of decimal numbers
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Moreno Durazo, Gloria Angélica
Center for Research and Advanced Studies of National Polytechnic Institute, Mexico
Mathematics and medicine: the socioepistemological roots of variation
TWG 14 University Mathematics Education:  Poster presentations
 

Morselli, Francesca
Università di Genova, Italy
Enhancing formative assessment in mathematical class discussion: a matter of feedback
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Mosvold, Reidar
University of Stavanger, Norway
Mathematical knowledge for teaching and the teaching of mathematics
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Moutet, Laurent
LDAR - Université Paris Diderot, France
Modeling tasks and mathematical work
TWG 6 Applications and Modelling:  Poster presentations
 

Moutsios-Rentzos, Andreas
University of the Aegean, Greece
Revisiting Odysseus' proving journeys to proof: the ‘convergent-bounded' question
TWG 1 Argumentation and Proof:  Paper presentations
 

Mukhopadhyay, Swapna
Portland State University, USA
Towards cultural responsiveness in mathematics education
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Mungenast, Sebastian
Wuerzburg University, Germany
Documenting metacognitive activity in qualitative interviews with high school graduates
TWG 8 Affect and Mathematical Thinking:  Poster presentations
 

Murphy, Carol
University of Waikato, New Zealand
Representing the one left over: a social semiotic perspective of students’ use of screen casting
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Mwadzaangati, Lisnet
University of Malawi, Malawi
An exploration of challenges of engaging students in generative interaction with diagrams during geometric proving
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Nachlieli, Talli
Levinsky College of Education, Israel
Ritual vs. Explorative classroom participation of pre-service elementary school mathematics teachers
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Nagari Haddif, Galit
University of Haifa, Israel
Principles of redesigning an e-task based on a paper-and-pencil task: The case of parametric functions
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Ní Ríordáin, Máire
University College Cork, Ireland
Ensuring methodological rigor for investigating the discourse development of bilingual mathematics learners
TWG 9 Mathematics and Language:  Paper presentations
 

Ní Shé, Caitríona
Maynooth University, Ireland
Technology enhanced Resources for Mathematics Education (TeRMEd)
TWG 16 Learning Mathematics with Technology and Other Resources:  Poster presentations
 

Nic Mhuirí, Siún
Dublin City University, Ireland
Considering research frameworks as a tool for reflection on practices: Grain-size and levels of change
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Nieszporek, Ralf
University of Paderborn, Germany
Upper secondary teachers’ stages of concern related to curricular innovations before and after a professional development course on teaching probability and statistics including the use of digital tools
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Nilsen, Hans Kristian
University of Agder, Norway
Mathematics at the enterprise: Industry, university and school working together to facilitate learning
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Nilsson, Per
Örebro University, Sweden
Characterizing theories aimed at supporting teachers’ mathematical classroom practices
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Noll, Anna
University of Koblenz-Landau, Campus Landau, Germany
How to design educational material for inclusive classes
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Poster presentations
 

Norqvist, Mathias
Umeå University, Sweden
The importance of cognitive abilities during practice and test situations and their connection to mathematical reasoning
TWG 3 Algebraic Thinking:  Poster presentations
 

Nosrati, Mona
Norwegian Centre for Mathematics Education, Norway
Ten years of mathematics education: Preparing for the supermarket?
TWG 11 Comparative Studies in Mathematics Education:  Paper presentations
 

Nowińska, Edyta
Osnabrück University, Germany
Evaluation of a rating system for the assessment of metacognitive-discursive instructional quality
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

O'Brien, Aoife
National University of Ireland, Galway, Ireland
Examining difficulties in initial algebra: Prerequisite and algebra content areas for Irish post-primary students.
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Odindo, Fredrick
University of East Anglia, UK
Teacher learning in teaching quadratic expressions and equations in Kenyan high schools: Learning study design
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Okumus, Samet
Recep Tayyip Erdogan University, Turkey
Middle school students’ employments of gestural signs: a case study
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Olande, Oduor
Linneuniversitetet, Sweden
Analysing students' graphicacy from a national test
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Olgun, Beyza
Bogazici University, Turkey
Preservice mathematics teachers’ types of mathematical thinking: use of representations, visual-spatial abilities, and problem solving performances
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Oller-Marcén, Antonio M.
Centro Universitario de la Defensa de Zaragoza, Spain
Analyzing some algebraic mistakes from a XVI century Spanish text and observing their persistence among present 10th grade students
TWG 12 History in Mathematics Education:  Paper presentations
 

Olsher, Shai
University of Haifa, Israel
What can we learn about mathematics multiple choice problems from attached supporting examples?
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

O'Meara, Niamh
EPISTEM, University of Limerick, Ireland
Is teacher knowledge affecting students' transition from primary to second level mathematics education?
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

OReilly, Maurice
CASTeL, Dublin City University, Ireland
Multiple perspectives on working with original mathematical sources from the Edward Worth Library, Dublin
TWG 12 History in Mathematics Education:  Paper presentations
 

Otero, Maria Rita
Universidad Nacional del Centro de la Provincia de Buenos Aires, Argentina
Co-disciplinary mathematics and physics research and study courses (RSC) within two groups of pre-service teacher education
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Ott, Barbara
University of Teacher Education St. Gallen, Switzerland
Children’s drawings for word problems – design of a theory and an analysis tool
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Ovadiya, Tikva
Oranim college, Israel
Writing fictional mathematical dialogues as a training and professional advancement tool for pre-service and in-service math teachers
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Ovodenko, Regina
Center for Educational Technology, Israel
To be or not to be an inflection point
TWG 14 University Mathematics Education:  Paper presentations
 

Palatnik, Alik
Shaanan Academic Religious Teachers' College, Israel
Sense making through algebraic activities: A case study
TWG 3 Algebraic Thinking:  Paper presentations
 

Palha, Sonia
1Universty of Applied Sciences of Amsterdam, The Netherlands
Interactive Virtual Math: a tool to support self-construction graphs by dynamical relations
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Palmér, Hanna
Linnaeus University, Sweden
How do preschool teachers characterize their own mathematics teaching in terms of design and content?
TWG 13 Early Years Mathematics:  Paper presentations
 

Panaoura, Areti
Frederick University, Cyprus
Inquiry-based teaching approach in mathematics by using the history of mathematics: a case study
TWG 12 History in Mathematics Education:  Paper presentations
 

Panero, Monica
University of Lyon, ENS de Lyon-Institut Français de l'Education, S2HEP-EducTice, France
Analysing MOOCs in terms of teacher collaboration potential and issues: the French experience
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Panse, Anja
Universität Paderborn, Germany
How we can begin to overcome students’ difficulties in reading mathematical texts
TWG 14 University Mathematics Education:  Paper presentations
 

Pantziara, Marilena
Cyprus Pedagogical Institute, Cyprus
Upper secondary mathematics teachers' beliefs expressed through metaphors
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Papadaki, Chrysi
University of Bremen, Germany
Hide and think: Limiting the obvious and challenging the mind in geometry
TWG 4 Geometry:  Paper presentations
 

Papadopoulos, Ioannis
Aristotle University of Thessaloniki, Greece
‘Father Woodland': A learning environment to facilitate the development of algebraic thinking
TWG 3 Algebraic Thinking:  Paper presentations
 

Paparistodemou, Efi
Cyprus Pedagogical Institute, Cyprus
Insights from students’ reasoning about probability when they design their own scratch games
TWG 5 Probability and Statistics Education:  Paper presentations
 

Parra, Veronica
CREAD, ESPE Bretagne, University of Brest, France
Teachers' collective documentation work: a case study on tolerance intervals
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Parzysz, Bernard
Université Paris-Diderot, France
Using spreadsheet for teaching probability in French high school
TWG 5 Probability and Statistics Education:  Paper presentations
 

Penava, Kristina
TU Dortmund Univercity, Germany
Relating theoretical and empirical probability
TWG 5 Probability and Statistics Education:  Poster presentations
 

Pericleous, Maria
UCL Institute of Education, UK
Play and pre-proving in the primary classroom
TWG 1 Argumentation and Proof:  Paper presentations
 

Petrovai, Kinga
University of Oxford, UK
A study investigating how mathematics teachers view and use tablets as a teaching tool
TWG 15 Teaching Mathematics with Technology and Other Resources:  Poster presentations
 

Pettersen, Geir Olaf
UiT The Arctic University of Norway, Norway
Making maps in kindergarten
TWG 13 Early Years Mathematics:  Poster presentations
 

Pierri, Anna
University of Salerno, Italy
From practical to theoretical thinking: The impact of the role-play activity
TWG 9 Mathematics and Language:  Paper presentations
 

Pinkernell, Guido
University of Education, Germany
Aspects of proficiency in elementary algebra
TWG 3 Algebraic Thinking:  Paper presentations
 

Pinto, Alon
University of California, Berkeley, USA
Math teaching as jazz improvisation: Exploring the ‘highly principled but not determinate’ instructional moves of an expert instructor
TWG 14 University Mathematics Education:  Paper presentations
 

Pinto, Eder
University of Granada, Spain
Functional thinking and generalisation in third year of primary school
TWG 3 Algebraic Thinking:  Paper presentations
 

Poli, Klio
University of Patras, Greece
Primary and secondary students' argumentation competence: a case study
TWG 1 Argumentation and Proof:  Paper presentations
 

Postelnicu, Valentina
Texas A&M University, USA
Didactic transposition in school algebra: The case of writing equations of parallel and perpendicular lines
TWG 3 Algebraic Thinking:  Paper presentations
 

Povey, Hilary
Sheffield Hallam University, UK
"No, it just didn't work": a teacher's reflections on all attainment teaching
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Pozio, Stefania
INVALSI, Italy
The Italian national education assessment system: building mathematics items
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Pratt, Nick
Plymouth University, UK
‘It's different, it's difficult, it's unknown': letting go of levels
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Priolet, Maryvonne
University of Reims Champagne Ardenne, France
Mathematics textbooks and teaching activity
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Prodromou, Theodosia
University of New England, Australia
Using a flipped classroom approach in the teaching of mathematics: a case study of a pre-service teachers class
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Proulx, Jérôme
Université du Québec à Montréal, Canada
Students’ and teachers’ mental solving of algebraic equations: from differences to challenges
TWG 3 Algebraic Thinking:  Paper presentations
 

Psycharis, Giorgos
National and Kapodistrian University of Athens, Greece
Critical incidents as a structure promoting prospective secondary mathematics teachers’ noticing
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Püschl, Juliane
University of Paderborn, Germany
Identifying discussion patterns of teaching assistants in mathematical tutorials in Germany
TWG 14 University Mathematics Education:  Paper presentations
 

Putra, Zetra Hainul
University of Copenhagen, Denmark
Pre-service elementary teachers' knowledge on comparing decimals based on anthropological theory of the didactic
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Quéré, Pierre-Vincent
Université de Bretagne Loire, France
French engineers' training and their mathematical needs in the workplace: interlinking tools and reasoning
TWG 14 University Mathematics Education:  Paper presentations
 

Rafiepour, Abolfazl
Shahid Bahonar University of Kerman, Iran
Fifth grade students construct decimal number through measurement activities
TWG 6 Applications and Modelling:  Paper presentations
 

Ramírez-Montes, Guillermo
University of Lisbon, Portugal
Phenomenological analysis of the line: a study based on the didactical analysis of mathematical knowledge
TWG 6 Applications and Modelling:  Poster presentations
 

Ramirez, Paola
University of Bristol,Graduate School of Education, UK
Teachers’ beliefs about mathematical modelling: An exploratory study
TWG 6 Applications and Modelling:  Paper presentations
 

Rauf, Carina
Universitiy of Hildesheim, Germany
Getting language awareness: A curriculum for language and language teaching for pre-service studies for teachers of mathematics
TWG 9 Mathematics and Language:  Poster presentations
 

Recio, Tomas
Universidad de Cantabria, Spain
The role of automated reasoning of geometry statements in mathematics instruction
TWG 15 Teaching Mathematics with Technology and Other Resources:  Poster presentations
 

Reit, Xenia-Rosemarie
Goethe-University Frankfurt, Germany
Towards an empirical validation of mathematics teachers' intuitive assessment practice exemplified by modelling tasks
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Remiche, Marie-Ange
University of Namur, Belgium
When students use podcasts to share their own expertise in building proofs
TWG 16 Learning Mathematics with Technology and Other Resources:  Poster presentations
 

Rensaa, Ragnhild Johanne
UiT the Arctic University of Norway, Norway
Approaches to learning of linear algebra among engineering students
TWG 14 University Mathematics Education:  Paper presentations
 

Rezat, Sebastian
University of Paderborn, Germany
Students’ utilization of feedback by an interactive mathematics e-textbook for primary level
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Ribeiro, Miguel
UNICAMP, Brazil
Intertwining noticing and knowledge in video analysis of self practice: the case of Carla
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 
Mathematics teachers’ knowledge and professional development in a lesson study context
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Poster presentations
 

Richard, Philippe R.
Université de Montréal, Canada
QED-Tutrix: creating and expanding a problem database towards personalized problem itineraries for proof learning
TWG 4 Geometry:  Poster presentations
 

Richit, Adriana
Universidade Federal da Fronteira Sul, Brazil
Lesson study seen by participants
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Rinvold, Reinert
Hedmark University of Applied Sciences, Norway
Learning of numerosity through a designed activity with die and towers
TWG 13 Early Years Mathematics:  Poster presentations
 

Robotti, Elisabetta
Università degli Studi di Torino, Dipartimento di Filosofia e Scienze dell’Educazione, Italy
How the representations take on a key role in an inclusive educational sequence concerning fraction
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Röj-Lindberg, Ann-Sofi
Åbo Akademi University, Finland
Introduction to equation solving for a new generation of algebra learners
TWG 3 Algebraic Thinking:  Paper presentations
 

Romano, Piera
Liceo Scientifico Statale “Mons. B. Mangino”, Italy
Errors or didactic resources: the design of a teacher education task in the context of Probability
TWG 5 Probability and Statistics Education:  Paper presentations
 

Romo, Avenilde
Instituto Nacional Politécnico, Mexico
Didactical activities to engineering training: methodological proposal
TWG 6 Applications and Modelling:  Paper presentations
 

Rønning, Frode
Norwegian University of Science and Technology, Norway
Entering the mathematical register through evolution of the material milieu for classification of polygons
TWG 9 Mathematics and Language:  Paper presentations
 

Roos, Anna-Katharina
University of Würzburg, Germany
Grundvorstellungen and their application to the concept of extreme points
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 

Roos, Helena
Linnaeus University, Sweden
Diversity in an inclusive mathematics classroom.
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Rouleau, Annette
Simon Fraser University, Canada
Tensions in the role of mathematics coaches
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Runesson Kempe, Ulla
Jönköping University, Sweden
Making distinctions - critical for the learning of the ‘existence' of negative numbers? Exploring how 'instructional products' from a theory informed Lesson study can be shared and enhance student learning
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Ruwisch, Silke
Leuphana University of Lueneburg, Germany
Mathematical reasoning in the written argumentation of primary students
TWG 1 Argumentation and Proof:  Paper presentations
 

Ryan, Miriam
DCU, Ireland
The role of the classroom teacher in supporting bilingual primary pupils in the learning of mathematics.
TWG 9 Mathematics and Language:  Paper presentations
 

Sachdeva, Shipra
Norwegian University of Science and Technology, Norway
Culturally-inspired mathematics learning
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Poster presentations
 

Safuanov, Ildar
Moscow City University, Russia
The role of genetic approach and history of mathematics in works of Russian mathematics educators (1850-1950)
TWG 12 History in Mathematics Education:  Poster presentations
 

Sajka, Miroslawa
Pedagogical University of Cracow, Poland
Visual attention while reading a multiple choice task by academics and students: A comparative eye-tracking approach
TWG 11 Comparative Studies in Mathematics Education:  Paper presentations
 

Sakonidis, Charalampos
Democritus University of Thrace, Greece
"Routes" of recontextualizing mathematical processes through a curriculum reform
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 
Teachers’ voices related to the mathematical meaning constructed in the classroom
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Sala Sebastià, Gemma
University of Barcelona, Spain
Mathematical modelling in an archaeological context: their complementarity as essential tool for inquiry
TWG 6 Applications and Modelling:  Paper presentations
 

Salinas-Hernández, Ulises
Centro de Investigación y de Estudios Avanzados, Mexico
The discourse of a teacher as a means to promote the objectification of a vector quantity: case of a novice teacher
TWG 9 Mathematics and Language:  Paper presentations
 

Salone, Jean-Jacques
Centre Universitaire de Formation et de Recherche, French Southern Territories
Examples of didactical plans that use Information and Communication Technologies in order to enlarge students' roles in learning and teaching
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Sánchez Aguilar, Mario
Instituto Politécnico Nacional, CICATA Legaria, Mexico
Research findings associated with the concept of function and their implementation in the design of mathematics textbooks tasks
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Sangari, Ali Akbar
Utrecht University, The Netherlands
Descriptive Assessment in primary school mathematics education in Iran: a teacher’s perspectives and practice
TWG 21 Assessment in Mathematics Education:  Poster presentations
 

Sanz, Maria T.
Universidad de Valencia, Spain
Classification and resolution of the descriptive historical fraction problems
TWG 12 History in Mathematics Education:  Paper presentations
 

Sauerwein, Marc
University of Bonn, Germany
A classical dot pattern-based approach to algebraic expressions in a multicultural classroom
TWG 3 Algebraic Thinking:  Poster presentations
 

Sayers, Judy
Stockholm University, Sweden
Opportunities to acquire foundational number sense: A quantitative comparison of popular English and Swedish textbooks
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Schacht, Florian
University of Duisburg-Essen, Germany
Nature and characteristics of digital discourse in mathematical construction tasks
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Schallmaier, Uwe
University of Bremen, Germany
Mathematical competence at work from different perspectives
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Poster presentations
 

Scherrmann, Alexandra
University of Education, Germany
Learning with worked examples – how does it work in a real classroom setting?
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Scheuring, Michaela
University of Koblenz-Landau, Germany
Real-materials or simulations? Searching for a way to foster functional thinking
TWG 16 Learning Mathematics with Technology and Other Resources:  Poster presentations
 

Schlager, Sabine
University of Duisburg-Essen, Germany
Effects of linguistic variations of word problems on the achievement in high stakes tests
TWG 9 Mathematics and Language:  Paper presentations
 

Schmelzer, Madlin
University of Münster, Germany
Strategies for fostering students' reading comprehension while they solve modelling problems
TWG 6 Applications and Modelling:  Paper presentations
 

Schmitz, Kirsten
University of Bremen, Germany
Access to conceptual understanding - summer courses for linear algebra and analysis after the first semester
TWG 14 University Mathematics Education:  Paper presentations
 

Schöner, Priska
University of Education, Germany
"Two, three and two more equals seven" - Preschoolers' perception and use of structures in sets
TWG 13 Early Years Mathematics:  Paper presentations
 

Schou, Marit
University of Southen Denmark, Denmark
Using tangible materials in upper secondary math education as a way of creating concept images
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Schreiber, Christof
Justus-Liebig-University; Department of Mathematics Education, Germany
The use of artifacts and different representations by producing mathematical audio-podcasts
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Schukajlow, Stanislaw
University of Münster, Germany
Multiple solutions for real-world problems and students' enjoyment, and boredom
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Schüler-Meyer, Alexander
TU Dortmund University, Germany
Multilingual learners’ opportunities for productive engagement in a bilingual German-Turkish teaching intervention on fractions
TWG 9 Mathematics and Language:  Paper presentations
 

Seah, Wee Tiong
The University of Melbourne, Australia
School mathematics education through the eyes of students in Ghana: Extrinsic and intrinsic valuing
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Seidouvy, Abdel Mainou
School of Science and Technology (Örebro University), Sweden
Designing for responsibility and authority in experiment based instruction in mathematics: The case of reasoning with uncertainty
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Selden, Annie
New Mexico State University, USA
An expanded theoretical perspective for proof construction and its teaching
TWG 1 Argumentation and Proof:  Paper presentations
 

Senbergs, Asger
Roskilde Katedralskole, Denmark
Mathematics at the Royal Danish Military Academy of 1830
TWG 12 History in Mathematics Education:  Paper presentations
 

Sequeiros, Pablo G.
University of Santiago de Compostela, Spain
A scale on cognitive configurations for tasks requiring visualization and spatial reasoning
TWG 4 Geometry:  Poster presentations
 

Serpe, Annarosa
University of Calabria, Italy
Technology will solve student's probability misconceptions: integrating simulation, algorithmics and programming
TWG 5 Probability and Statistics Education:  Paper presentations
 

Serrazina, Lurdes
UIDEF, Instituto de Educação,Universidade de Lisboa, Portugal
The role of representations in promoting the quantitative reasoning
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Shinno, Yusuke
Osaka Kyoiku University, Japan
Meta-theoretical aspects of the two case studies of networking theoretical perspectives: focusing on the treatments of theoretical terms in different networking strategies
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Poster presentations
 

Siero, Luis
Instituto Politécnico Nacional, CICATA, Mexico
Methodology for designing didactical activities as an engineering project of a tactile sensorial therapeutic ramp
TWG 6 Applications and Modelling:  Paper presentations
 

Sikko, Svein Arne
NTNU, Norway
‘Walking a graph' - primary school students' experimental session on functions and graphs
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Silva, Ana Filipa
Associação Pró-Infância Santo António de Lisboa, Portugal
Preschool class – inquiry and magnets
TWG 13 Early Years Mathematics:  Poster presentations
 

Silvestre Castro, Eleazar
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico
High school students' first experiences with the sampling distribution: toward a distributive perspective of sampling and inference
TWG 5 Probability and Statistics Education:  Paper presentations
 

Simon, Martin
New York University, USA
Learning through activity: a developing integrated theory of mathematics learning and teaching
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 

Simsek, Ali
University College London Institute of Education, UK
A study of the Cornerstone Maths project teachers' classroom practices: geometric similarity using Cornerstone Maths software
TWG 15 Teaching Mathematics with Technology and Other Resources:  Poster presentations
 

Siopi, Kalliopi
University of Patras, Department of Primary Education, Greece
Tool-based argumentation
TWG 1 Argumentation and Proof:  Paper presentations
 

Skoumpourdi, Chrysanthi
University of the Aegean, Greece
A framework for designing inquiry based activities for early childhood mathematics
TWG 13 Early Years Mathematics:  Paper presentations
 

Slavickova, Maria
Comenius University in Bratislava, Faculty of Mathematics, Physics and Informatics, Slovakia
Developing conceptual knowledge by using ICT on mathematics lessons
TWG 14 University Mathematics Education:  Poster presentations
 

Sloth, Knud Thorbjørn
University College Capital, Denmark
Combining two frameworks: a new perspective on mathematics teacher knowledge
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Poster presentations
 

Smestad, Bjørn
University of Oslo and Akershus University College of Applied Sciences, Norway
Design research with history in mathematics education
TWG 12 History in Mathematics Education:  Paper presentations
 

Soldano, Carlotta
University of Turin, Italy
Learning with the logic of inquiry: game-activities inside Dynamic Geometry Environments
TWG 1 Argumentation and Proof:  Paper presentations
 

Soneira, Carlos
University of A Coruña, Spain
An insight into the sources of multiple referents for the unknown in the algebraic solving of word problems
TWG 3 Algebraic Thinking:  Paper presentations
 

Soto-Andrade, Jorge
University of Chile Faculty of Science Dept. of Mathematics, Chile
Enactive metaphors in mathematical problem solving
TWG 24 Representations in Mathematics Teaching and Learning:  Paper presentations
 

Soyak, Oznur
Middle East Technical University, Turkey
Middle school students’ difficulties in proportional reasoning
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Sproesser, Ute
University of Education, Germany
How to deal with learning difficulties related to functions - assessing teachers' knowledge and introducing a coaching
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Steiner, Aya
University of Haifa, Israel
Development of the discourse of rational numbers
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Steinweg, Anna Susanne
University of Bamberg, Germany
Making implicit potential explicit- key ideas of algebraic thinking in primary school
TWG 3 Algebraic Thinking:  Paper presentations
 

Stender, Peter
University of Hamburg, Germany
Heuristic strategies in mathematics teacher education
TWG 14 University Mathematics Education:  Poster presentations
 

Stenzel, Thomas
University of Duisburg-Essen, Germany
Supporting university freshmen - an intervention to increase strategic knowledge
TWG 14 University Mathematics Education:  Poster presentations
 

Sterner, Helén
Dalarna University, Sweden
Long-term learning in mathematics teaching and problematizing daily practice
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Stewart, Sepideh
university of Oklahoma, USA
Navigating through the mathematical world: Uncovering a geometer’s thought processes through his handouts and teaching journals
TWG 14 University Mathematics Education:  Paper presentations
 

Stouraitis, Konstantinos
National and Kapodistrian University of Athens, Greece
Teachers' decisions and the transformation of teaching activity
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Street, Karin
University of Oxford, UK
Self-efficacy and mathematics performance: reciprocal relationships
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Strømskag, Heidi
Norwegian University of Science and Technology, Norway
Constraints to a justification of commutativity of multiplication
TWG 3 Algebraic Thinking:  Paper presentations
 

Stylianides, Andreas
University of Cambridge, UK
Promoting prospective elementary teachers’ knowledge about the role of assumptions in mathematical activity
TWG 22 Curricular Resources and Task Design in Mathematics Education:  Paper presentations
 

Subtil, Manuela
Escola Básica 2º, 3º ciclos Fragata do Tejo, Portugal
The development of the mathematics curriculum in basic education with technology
TWG 16 Learning Mathematics with Technology and Other Resources:  Poster presentations
 

Sundström, Manya
Umeå University, Sweden
Young children's aesthetic development in the context of mathematical explanation
TWG 13 Early Years Mathematics:  Paper presentations
 

Suriakumaran, Neruja
Faculty 3, Mathematics Education, Germany
Personal meaning and motivation when learning mathematics
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Sveider, Cecilia
Linköping University, Dept of Behavioural Sciences and Learning, Sweden
Representations of fractions in mathematics education- what do students´learn?
TWG 24 Representations in Mathematics Teaching and Learning:  Poster session
 

Swanson, David
University of Manchester, UK
Integrating critical theory and practice in mathematics education: A case study of the Reclaiming Schools movement in the UK
TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:  Paper presentations
 

Swidan, Osama
Kaye Academic College, Israel
Using dynamic and interactive technological tools to support conceptual learning of equations among low- achieving students
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Szabo, Attila
Stockholm University, Department of Mathematics and Science Education, Sweden
Mathematical memory revisited: mathematical problem solving by high achieving students
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Tabach, Michal
Tel-Aviv Univesity, Israel
Abstraction in context and documenting collective activity
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Paper presentations
 

Tacoma, Sietske
Utrecht University, The Netherlands
Using student models to generate feedback in a university course on statistical sampling
TWG 5 Probability and Statistics Education:  Paper presentations
 

Taranto, Eugenia
Department of Mathematics G. Peano, University of Turin, Italy
Analyzing MOOCs in terms of teacher collaboration potential and issues: the Italian experience
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Tatsis, Konstantinos
University of Ioannina, Greece
Authority structures in preservice teachers' talk
TWG 9 Mathematics and Language:  Paper presentations
 

Tchoshanov, Mourat
University of Texas at El Paso, USA
Cross-national study of lower secondary mathematics teachers’ content knowledge in USA and Russia
TWG 11 Comparative Studies in Mathematics Education:  Paper presentations
 

Teledahl, Anna
Dalarna University, Sweden
Mathematics teachers' assessment of accounts of problem solving
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Tempier, Frédérick
LDAR, Laboratoire de didactique André Revuz, France
Dealing with large numbers: what is important for students and teachers to know?
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Tesfamicael, Solomon
Faculty of Teacher and Interpreter Education (FLT), Norwegian University of Science and Technology (NTNU), Norway
The teaching and learning of relations and functions: A comparative study of Norwegian and Ethiopian textbooks
TWG 11 Comparative Studies in Mathematics Education:  Poster presentations
 

Thoma, Athina
University of East Anglia, UK
Discursive shifts from school to university mathematics and lecturer assessment practices: Commognitive conflicts regarding variables
TWG 14 University Mathematics Education:  Paper presentations
 

Thouless, Helen
Independent Consultant, UK
The role of gestures in supporting mathematical communication for students with language delays
TWG 13 Early Years Mathematics:  Paper presentations
 

Timcenko, Olga
Aalborg University Copenhagen, Denmark
Teaching mathematics to non-mathematicians: the case of media technology undergraduate students
TWG 14 University Mathematics Education:  Poster presentations
 

Toor, Amanjot
Brock University, Canada
Intermediate mathematics teachers’ experiences of teachable moments
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Poster presentations
 
Math centers: A pedagogical tool for student engagement in intermediate math class
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Trakulphadetkrai, Natthapoj Vincent
University of Reading, UK
Undergraduate students' perceptions of learning introductory statistics through producing a statistical picture book
TWG 5 Probability and Statistics Education:  Paper presentations
 

Treffert-Thomas, Stephanie
Loughborough University, UK
Getting into university: From foundation to first year engineering
TWG 14 University Mathematics Education:  Poster presentations
 

Tumova, Veronika
Charles University, Faculty of Education, Czech Republic
What influences grade 6 to 9 pupils' success in solving conceptual tasks on area and volume
TWG 4 Geometry:  Paper presentations
 

Turgut, Melih
Eskisehir Osmangazi University, Turkey
Students’ reasoning on linear transformations in a DGS: a semiotic perspective
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Tuset, Gry Anette
Stord Haugesund University College, Norway
A commognitive lens to study pre-service teachers' teaching in the context of achieving a goal of ambitious mathematics teaching
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Twohill, Aisling
Dublin City University, Ireland
Shape patterning tasks: An exploration of how children build upon their observations when asked to construct general terms.
TWG 3 Algebraic Thinking:  Paper presentations
 

Tyskerud, Anita
Faculty of Arts and Education, Norway
Investigating Lesson Study as a practice-based approach to study the development of mathematics teachers' professional practice
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Tzekaki, Marianna
Aristotle University of Thessaloniki, Greece
Teaching intervention for developing generalization in early childhood: the case of measurement
TWG 13 Early Years Mathematics:  Paper presentations
 

Umameh, Michael
University of Leeds, UK
Resource system of UK mathematics teachers appropriating the mastery teaching approaches
TWG 15 Teaching Mathematics with Technology and Other Resources:  Poster presentations
 

Valenta, Anita
Norwegian University of Science and Technology, Norway
Rehearsals in work with in-service mathematics teachers
TWG 23 Implementation of Research Findings in Mathematics Education:  Paper presentations
 

Vallejo Vargas, Estela
University of Bremen, Germany
Proof-based teaching as a basis for understanding why
TWG 1 Argumentation and Proof:  Paper presentations
 

van Bommel, Jorryt
Karlstad University, Sweden
Slow down, you move too fast!
TWG 13 Early Years Mathematics:  Poster presentations
 

van Dijke-Droogers, Marianne
Csg Prins Maurits, The Netherlands
Enhancing statistical literacy
TWG 5 Probability and Statistics Education:  Paper presentations
 

Vančura, Jiří
Charles University, Czech Republic
Research on the language barrier of students who use Khan Academy as a mathematics homework platform
TWG 16 Learning Mathematics with Technology and Other Resources:  Paper presentations
 

Vanegas, Yuly
Universitat Autónoma de Barcelona, Spain
Discussing school mathematical narratives in early childhood future teacher education
TWG 13 Early Years Mathematics:  Paper presentations
 

Vargas Dorneles, Beatriz
Universidade Federal do Rio Grande do Sul, Brazil
Number estimation in children: an assessment study with number line estimation and numerosity tasks
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Vendeira, Céline
University of Geneva, Switzerland
Shape recognition in early school:how to develop the dimensional deconstruction?
TWG 4 Geometry:  Paper presentations
 

Venkat, Hamsa
Wits School of Education, University of the Witwatersrand, South Africa
Focusing on the ‘middle ground’ of example spaces in primary mathematics teaching development in South Africa
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Viirman, Olov
University of Agder, Norway
From ritual to exploration: the evolution of biology students' mathematical discourse through mathematical modelling activities
TWG 14 University Mathematics Education:  Paper presentations
 

Viitala, Hanna
University of Agder, Norway
A case study on Finnish pupils' mathematical thinking: Problem solving and view of mathematics
TWG 8 Affect and Mathematical Thinking:  Paper presentations
 

Villalonga Pons, Joana
Universitat Autònoma de Barcelona, Spain
Self-scaffolding students' problem solving: testing an orientation basis
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Villarreal, Aitor
Universitat Autònoma de Barcelona, Spain
First year student teachers dealing with non-routine questions in the context of the entrance examination to a degree in Primary Education
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Vogel, Markus
University of Education Heidelberg, Germany
Visualizing Bayesian situations – about the use of the unit square
TWG 5 Probability and Statistics Education:  Paper presentations
 

Vondrová, Naďa
Charles University, Faculty of Education, Czech Republic
Future mathematics teachers noticing mathematics: knowledge-based reasoning
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Vorhölter, Katrin
University of Hamburg, Germany
Metacognitive modelling competencies in small groups
TWG 6 Applications and Modelling:  Paper presentations
 

Wawro, Megan
Virginia Tech, USA
Meta-representational competence with linear algebra in quantum mechanics
TWG 14 University Mathematics Education:  Paper presentations
 

Weber, Christof
School of Education, University of Applied Sciences Northwestern Switzerland, Switzerland
Graphing logarithmic functions: Multiple interpretations of logarithms as a basis for understanding
TWG 3 Algebraic Thinking:  Paper presentations
 

Weingarden, Merav
Technion, Israel
The Realization Tree Assessment tool: Assessing the exposure to mathematical objects during a lesson
TWG 19 Mathematics Teacher and Classroom Practices:  Paper presentations
 

Wessel, Lena
TU Dortmund University, Germany
How do students develop lexical means for understanding the concept of relative frequency? Empirical insights on the basis of trace analyses
TWG 9 Mathematics and Language:  Paper presentations
 

Wille, Annika
Alpen-Adria-Universität Klagenfurt, Austria
Conceptions of the transition from the difference quotient to the derivative in imaginary dialogues written by preservice teachers
TWG 9 Mathematics and Language:  Paper presentations
 

Wladis, Claire
City University of New York, USA
An instructor-generated concept framework for elementary algebra in the tertiary context
TWG 3 Algebraic Thinking:  Poster presentations
 

Wöller, Susanne
University of Leipzig, Germany
Children's block-building: How do they express their knowledge of geometrical solids?
TWG 4 Geometry:  Poster presentations
 

Wong, Kwong-cheong
The Hong Kong Polytechnic University, China
Reasoning-and-proving in geometry in school mathematics textbooks in Hong Kong
TWG 1 Argumentation and Proof:  Paper presentations
 

Xenofontos, Constantinos
University of Nicosia, Cyprus
Explanations as tools for evaluating content knowledge for teaching: A cross-national pilot study in Cyprus and Greece
TWG 11 Comparative Studies in Mathematics Education:  Paper presentations
 

Yan, Xiaoheng
University of Toronto, Canada
An exploratory teaching style in promoting the learning of proof
TWG 1 Argumentation and Proof:  Paper presentations
 

Yilmaz, Aysenur
Middle East Technical University, Turkey
How middle grade students explain ordering statements within real life situation? An example of temperature context
TWG 2 Arithmetic and Number Systems:  Paper presentations
 

Yilmaz, Nadide
Hacettepe University, Turkey
Anticipating students’ responses through lesson study: A case study with three prospective middle school mathematics teachers
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Yilmaz, Nurbanu
Bulent Ecevit University, Turkey
An investigation of elementary mathematics teachers' knowledge for teaching algebra
TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:  Paper presentations
 

Zalska, Jana
Charles University in Prague, Czech Republic
Looking for the roots of an argument: textbook, teacher, and student influence on arguments in a traditional Czech classroom
TWG 1 Argumentation and Proof:  Paper presentations
 

Zehetmeier, Stefan
University of Klagenfurt, Austria
Researching the sustainable impact of professional development programmes
TWG 18 Mathematics Teacher Education and Professional Development:  Paper presentations
 

Zender, Joerg
Goethe University Frankfurt am Main, Germany
Why do in-service teachers and student teachers use MathCityMap and why don't - A short survey on acceptance and user behavior of MathCityMap
TWG 15 Teaching Mathematics with Technology and Other Resources:  Paper presentations
 

Zerafa, Esmeralda
University of Malta, Malta
Providing successful intervention for mathematics learning difficulties: Developing a model for analysis
TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:  Poster presentations
 

Zhao, Xiaoyan
Freudenthal Institute, FBW, Utrecht University, The Netherlands
Supporting Chinese primary school teachers' assessment practice in mathematics: effects on student achievement
TWG 21 Assessment in Mathematics Education:  Paper presentations
 

Zindel, Carina
TU Dortmund University, Germany
Conceptualizing the core of the function concept - A facet model
TWG 3 Algebraic Thinking:  Paper presentations
 

Zweidar, Vivica
University of Bremen, Germany
Functions: implicit
TWG 9 Mathematics and Language:  Paper presentations