
Programme
Titles
Presenters
Topics

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 researchbased 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 computerbased 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


AndradeMolina, 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 resourcebased 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


AsamiJohansson, 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


AslanTutak, 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 Metaknowledge 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, AmaliaChristina 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 KwaZuluNatal, 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 questionsanswers dialectic TWG 6 Applications and Modelling:
Paper presentations


Batista Rodrigues, Bruna Mayara University of Lisbon, Portugal The construction and study of the ellipse through HuzitaHatori 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 AlQasemi Academic College of Education, Israel The development of preservice teachers' TPACK in the use of digital tools TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations


Beck, Johannes JuliusMaximilians 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 toolbased actions and gestures contribute to conceptbuilding 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 "learningteachinglaboratories" 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 reasoningandproving 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 problemsolving in classrooms TWG 19 Mathematics Teacher and Classroom Practices:
Poster presentations


Bini, Giulia LSS Leonardo da Vinci, Italy Maths Welcome Pack: a multisensory 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 nonverbal aspects of the cardinal concept in bodilyspatial 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' autonomysupportive 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


BöchererLinder, 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 defragmentation 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 prooforiented tasks: lessons from teacher researcher collaboration TWG 1 Argumentation and Proof:
Paper presentations


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


Bulien, Tone University of Stavanger, Norway Providing a tool for lesson planning in preservice 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


CaballeroPérez, 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 preservice 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 IBMEcentered 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


ChenevototQuentin, 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 casestudy in teachertraining 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 inservice teachers TWG 4 Geometry:
Paper presentations


CohenEliyahu, 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 coteaching 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 educatorembedded 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 AnNajah 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 groupbased 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 preservice 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 Preservice 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: preservice 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 nonhierarchical clustering methods to study students algebraic thinking in solving an openended questionnaire TWG 3 Algebraic Thinking:
Poster presentations


Diamantidis, Dimitris National Kapodistrian University of Athens, Greece Meaninggeneration through an interplay between problem solving and Constructionism in the cbook 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 nonEuclidean geometry in a college geometry course TWG 4 Geometry:
Paper presentations


DiezPalomar, 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


DonevskaTodorova, Ana HumboldtUniversität 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


DrükeNoe, 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 PreCalculus 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 decisionmaking 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 inservice 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 6yearold 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


EspinozaVásquez, 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 KoblenzLandau, Germany Issues of a quasilongitudinal 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


FernándezLeón, 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 spatiotemporal 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 EducaçãoUniversidade 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 GoetheUniversity 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 lowattaining 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 Preservice 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, RachelAnn 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 UiTThe Arctic University of Norway, Norway How Sámi teachers’ development of a teaching unit influences their selfdetermination 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 lowerachieving children cope with derived factsbased 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, Scratchbased 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 MorenoEsteva, Enrique University of Helsinki, Dept. of Teacher Education, Finland Identifying key visualcognitive processes in students' interpretation of graph representations using eyetracking data and math/machine learning based data analysis TWG 24 Representations in Mathematics Teaching and Learning:
Paper presentations


Gärtner, Hanna GoetheUniversity, Germany Evaluation of a discovery, inquiry and projectbased 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, JeanPhilippe 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 micromodel 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


GómezChacón, 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


GonzálezMartín, 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 sportrelated socially openended problems to coordinate decisionmaking, 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 preservice 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 selfregulation and mathematical proficiency TWG 8 Affect and Mathematical Thinking:
Paper presentations


Gruenig, Fabian University of Education, Germany Teaching mathematics with multimediabased 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


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


GuilleBiel 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


GutiérrezSoto, 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 socialemotional 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


HäselWeide, 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 mathematicsrelated 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


HeydMetzuyanim, 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 KoblenzLandau, Campus Landau, Germany Assessment of students' thinking when working with graphs of functions  Promoting preservice 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 Situationspecific diagnostic competence of mathematics teachers  a qualitative supplementary study of the TEDSFollowUp project TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations


Houdement, Catherine Laboratoire de Didactique André Revuz (LDAREA 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 Preservice 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 preservice 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 Selfassessment and achievement in mathematics education  the influence of immediate feedback included in a computerbased 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


JoffredoLe 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 Contentrelated 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 RuhrUniversität 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 betweenstate 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’ selfreported 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 selfregulation strategies with SOLVE IT to two students with learning disabilities: Effects on mathematical problemsolving 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 Preservice 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 firstyear 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 problemsolving 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 sociopolitics 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: crosscutting 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 DuisburgEssen, 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 inservice 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 Selfefficacy 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 ebooks 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, JeanMarie 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 Selfregulated 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 GrenobleAlpes, 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 Computerbased 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’ resourcing 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 DiderotParis 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 appsupported 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


MajTatsis, 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 CinvestavIPN, 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


MataPereira, 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


MeletiouMavrotheris, Maria European University Cyprus, Cyprus Atdistance collegelevel 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 Nonmathematics majors doing statistics: Factors behind performance TWG 5 Probability and Statistics Education:
Poster presentations


Miragliotta, Elisa University of Ferrara, Italy Visuospatial 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 DuisburgEssen, 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 quasiDarwinism. 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 storybased 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


MoutsiosRentzos, Andreas University of the Aegean, Greece Revisiting Odysseus' proving journeys to proof: the ‘convergentbounded' 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 preservice 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 etask based on a paperandpencil 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: Grainsize 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 KoblenzLandau, 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 metacognitivediscursive 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 postprimary 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, visualspatial abilities, and problem solving performances TWG 24 Representations in Mathematics Teaching and Learning:
Paper presentations


OllerMarcén, 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 Codisciplinary mathematics and physics research and study courses (RSC) within two groups of preservice 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 preservice and inservice 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 selfconstruction 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 Inquirybased 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 LyonInstitut Français de l'Education, S2HEPEducTice, 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 ParisDiderot, 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 preproving 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 roleplay 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 preservice 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 Preservice elementary teachers' knowledge on comparing decimals based on anthropological theory of the didactic TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations


Quéré, PierreVincent 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


RamírezMontes, 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 preservice 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, XeniaRosemarie GoetheUniversity 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, MarieAnge 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 etextbook 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 QEDTutrix: 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


RöjLindberg, AnnSofi 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, AnnaKatharina 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 Culturallyinspired 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 (18501950) 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 eyetracking 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


SalinasHernández, 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, JeanJacques 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 patternbased 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 DuisburgEssen, 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 KoblenzLandau, Germany Realmaterials 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 DuisburgEssen, 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 JustusLiebigUniversity; Department of Mathematics Education, Germany The use of artifacts and different representations by producing mathematical audiopodcasts TWG 24 Representations in Mathematics Teaching and Learning:
Paper presentations


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


SchülerMeyer, Alexander TU Dortmund University, Germany Multilingual learners’ opportunities for productive engagement in a bilingual GermanTurkish 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 Metatheoretical 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 PróInfância 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 Toolbased 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: gameactivities 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


SotoAndrade, 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 DuisburgEssen, Germany Supporting university freshmen  an intervention to increase strategic knowledge TWG 14 University Mathematics Education:
Poster presentations


Sterner, Helén Dalarna University, Sweden Longterm 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 Selfefficacy 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 TelAviv 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 Crossnational 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 nonmathematicians: 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


TreffertThomas, 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 preservice 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 practicebased approach to study the development of mathematics teachers' professional practice TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
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Tzekaki, Marianna Aristotle University of Thessaloniki, Greece Teaching intervention for developing generalization in early childhood: the case of measurement TWG 13 Early Years Mathematics:
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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:
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Valenta, Anita Norwegian University of Science and Technology, Norway Rehearsals in work with inservice mathematics teachers TWG 23 Implementation of Research Findings in Mathematics Education:
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Vallejo Vargas, Estela University of Bremen, Germany Proofbased teaching as a basis for understanding why TWG 1 Argumentation and Proof:
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van Bommel, Jorryt Karlstad University, Sweden Slow down, you move too fast! TWG 13 Early Years Mathematics:
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van DijkeDroogers, Marianne Csg Prins Maurits, The Netherlands Enhancing statistical literacy TWG 5 Probability and Statistics Education:
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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:
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Vanegas, Yuly Universitat Autónoma de Barcelona, Spain Discussing school mathematical narratives in early childhood future teacher education TWG 13 Early Years Mathematics:
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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:
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Vendeira, Céline University of Geneva, Switzerland Shape recognition in early school:how to develop the dimensional deconstruction? TWG 4 Geometry:
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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:
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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:
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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:
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Villalonga Pons, Joana Universitat Autònoma de Barcelona, Spain Selfscaffolding students' problem solving: testing an orientation basis TWG 19 Mathematics Teacher and Classroom Practices:
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Villarreal, Aitor Universitat Autònoma de Barcelona, Spain First year student teachers dealing with nonroutine questions in the context of the entrance examination to a degree in Primary Education TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
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Vogel, Markus University of Education Heidelberg, Germany Visualizing Bayesian situations – about the use of the unit square TWG 5 Probability and Statistics Education:
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Vondrová, Naďa Charles University, Faculty of Education, Czech Republic Future mathematics teachers noticing mathematics: knowledgebased reasoning TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
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Vorhölter, Katrin University of Hamburg, Germany Metacognitive modelling competencies in small groups TWG 6 Applications and Modelling:
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Wawro, Megan Virginia Tech, USA Metarepresentational competence with linear algebra in quantum mechanics TWG 14 University Mathematics Education:
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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:
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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:
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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:
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Wille, Annika AlpenAdriaUniversität 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:
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Wladis, Claire City University of New York, USA An instructorgenerated concept framework for elementary algebra in the tertiary context TWG 3 Algebraic Thinking:
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Wöller, Susanne University of Leipzig, Germany Children's blockbuilding: How do they express their knowledge of geometrical solids? TWG 4 Geometry:
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Wong, Kwongcheong The Hong Kong Polytechnic University, China Reasoningandproving in geometry in school mathematics textbooks in Hong Kong TWG 1 Argumentation and Proof:
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Xenofontos, Constantinos University of Nicosia, Cyprus Explanations as tools for evaluating content knowledge for teaching: A crossnational pilot study in Cyprus and Greece TWG 11 Comparative Studies in Mathematics Education:
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Yan, Xiaoheng University of Toronto, Canada An exploratory teaching style in promoting the learning of proof TWG 1 Argumentation and Proof:
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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:
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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:
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Yilmaz, Nurbanu Bulent Ecevit University, Turkey An investigation of elementary mathematics teachers' knowledge for teaching algebra TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
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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:
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Zehetmeier, Stefan University of Klagenfurt, Austria Researching the sustainable impact of professional development programmes TWG 18 Mathematics Teacher Education and Professional Development:
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Zender, Joerg Goethe University Frankfurt am Main, Germany Why do inservice 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:
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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:
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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:
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Zindel, Carina TU Dortmund University, Germany Conceptualizing the core of the function concept  A facet model TWG 3 Algebraic Thinking:
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Zweidar, Vivica University of Bremen, Germany Functions: implicit TWG 9 Mathematics and Language:
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