
Programme
Titles
Presenters
Topics


TWG 1 Argumentation and Proof 
A framework for classifying mathematical justification tasks Boon Liang Chua* TWG 1 Argumentation and Proof:
Paper presentations 

A reference for studying the teaching of logic Zoé Mesnil* TWG 1 Argumentation and Proof:
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An application of Habermas’ rationality to the teacher’s actions: Analysis of argumentation in two classrooms AnnaMarie Conner* TWG 1 Argumentation and Proof:
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An expanded theoretical perspective for proof construction and its teaching John Selden, Annie Selden* TWG 1 Argumentation and Proof:
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An exploratory teaching style in promoting the learning of proof Xiaoheng Yan*, John Mason, Gila Hanna TWG 1 Argumentation and Proof:
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Can teacher trainees use inductive arguments during their problem solving activity? Eszter Kónya*, Zoltán Kovács TWG 1 Argumentation and Proof:
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Cognitive unity of theorems, theories and related rationalities Paolo Boero* TWG 1 Argumentation and Proof:
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Conceptualizing reasoningandproving opportunities in textbook expositions: cases from secondary calculus Andreas Bergwall* TWG 1 Argumentation and Proof:
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Evolution of proof form in Japanese geometry textbooks Marion Cousin, Takeshi Miyakawa* TWG 1 Argumentation and Proof:
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Fostering and investigating students' pathways to formal reasoning: A design research project on structural scaffolding for 9th graders Kerstin Hein*, Susanne Prediger TWG 1 Argumentation and Proof:
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Identifying phases and activities in the proving process of firstyear undergraduates Katharina Kirsten* TWG 1 Argumentation and Proof:
Poster presentations 

Issues of a quasilongitudinal study on different types of argumentation in the context of division by zero Christian Fahse* TWG 1 Argumentation and Proof:
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Learning with the logic of inquiry: gameactivities inside Dynamic Geometry Environments Carlotta Soldano*, Ferdinando Arzarello TWG 1 Argumentation and Proof:
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Looking for the roots of an argument: textbook, teacher, and student influence on arguments in a traditional Czech classroom Jana Zalska* TWG 1 Argumentation and Proof:
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Mathematical reasoning in the written argumentation of primary students Silke Ruwisch* TWG 1 Argumentation and Proof:
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Metaknowledge about proof Nadia Azrou* TWG 1 Argumentation and Proof:
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Misconceptions and developmental proof Kirsti Hemmi*, Erika Julin, Ray Pörn TWG 1 Argumentation and Proof:
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Play and preproving in the primary classroom Maria Pericleous*, David Pratt TWG 1 Argumentation and Proof:
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Preservice middle school mathematics teachers' interpretation of statements regarding proof by contrapositive Esra Demiray*, Mine Isiksal Bostan TWG 1 Argumentation and Proof:
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Proofbased teaching as a basis for understanding why David Reid, Estela Vallejo Vargas* TWG 1 Argumentation and Proof:
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Proofs and refutations in school mathematics: A task design in dynamic geometry environments Kotaro Komatsu*, Keith Jones TWG 1 Argumentation and Proof:
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Primary and secondary students' argumentation competence: a case study Eugenia Koleza, Nikolaos Metaxas, Klio Poli* TWG 1 Argumentation and Proof:
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Principles towards justification: an episode about equations in grade 7 Joana MataPereira*, João Pedro Ponte TWG 1 Argumentation and Proof:
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Reasoningandproving in geometry in school mathematics textbooks in Hong Kong Kwongcheong Wong* TWG 1 Argumentation and Proof:
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Revisiting Odysseus' proving journeys to proof: the ‘convergentbounded' question Andreas MoutsiosRentzos*, Faidra KalozoumiPaizi TWG 1 Argumentation and Proof:
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Supporting classroom implementation of prooforiented tasks: lessons from teacher researcher collaboration Orly Buchbinder* TWG 1 Argumentation and Proof:
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The flow of a proof  Establishing a basis of agreement Mika Gabel*, Tommy Dreyfus TWG 1 Argumentation and Proof:
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Toolbased argumentation Kalliopi Siopi*, Eugenia Koleza TWG 1 Argumentation and Proof:
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TWG 2 Arithmetic and Number Systems 
5 and 6yearold children´s number line estimation patterns Jessica Elofsson* TWG 2 Arithmetic and Number Systems:
Poster presentations 

A conception of betweenstate ratio in fraction form Gulseren Karagoz Akar* TWG 2 Arithmetic and Number Systems:
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Dealing with large numbers: what is important for students and teachers to know? Christine Chambris, Frédérick Tempier* TWG 2 Arithmetic and Number Systems:
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Development of the discourse of rational numbers Aya Steiner* TWG 2 Arithmetic and Number Systems:
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Fostering rational numbers understanding through percentage Helena Gil Guerreiro*, Lurdes Serrazina TWG 2 Arithmetic and Number Systems:
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How lowerachieving children cope with derived factsbased teaching of basic multiplication: Findings from a design research study Michael Gaidoschik*, Kora Maria Deweis, Silvia Guggenbichler TWG 2 Arithmetic and Number Systems:
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How middle grade students explain ordering statements within real life situation? An example of temperature context Aysenur Yilmaz*, Mine Isiksal Bostan TWG 2 Arithmetic and Number Systems:
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Models’ use and adaptation aiming at conceptual understanding of decimal numbers Cristina Morais*, Lurdes Serrazina TWG 2 Arithmetic and Number Systems:
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Middle school students’ difficulties in proportional reasoning Oznur Soyak*, Mine Isiksal TWG 2 Arithmetic and Number Systems:
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Number estimation in children: an assessment study with number line estimation and numerosity tasks Beatriz Vargas Dorneles*, Mariana Lima Duro, Nohemy Marcela Bedoya Rios, Camila Peres Nogues, Clarissa dos Santos Pereira TWG 2 Arithmetic and Number Systems:
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Number line as a conceptual and didactical resource for teaching fractions using applets Carlos Valenzuela García, Olimpia Figueras, David Arnau, Juan GutiérrezSoto* TWG 2 Arithmetic and Number Systems:
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Opportunities to acquire foundational number sense: A quantitative comparison of popular English and Swedish textbooks Anna Löwenhielm, Gosia Marschall, Judy Sayers*, Paul Andrews TWG 2 Arithmetic and Number Systems:
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Seeking symmetry in distributive property: children developing structure sense in arithmetic Andrea Maffia*, Maria Alessandra Mariotti TWG 2 Arithmetic and Number Systems:
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The double nature of didactic models in conceptualizing the evolution of number systems: A mathematical model and a learning tool Marita Barabash*, Raisa Guberman TWG 2 Arithmetic and Number Systems:
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The fostering of flexible mental calculation competences in an inclusive mathematics classroom during Mutual Learning takes place Laura Korten* TWG 2 Arithmetic and Number Systems:
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Working memory, number sense and arithmetical performance: relations between these domains Luciana Vellinho Corso*, Beatriz Vargas Dorneles TWG 2 Arithmetic and Number Systems:
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TWG 3 Algebraic Thinking 
A classical dot patternbased approach to algebraic expressions in a multicultural classroom Marc Sauerwein*, Malte Mink TWG 3 Algebraic Thinking:
Poster presentations 

An insight into the sources of multiple referents for the unknown in the algebraic solving of word problems Carlos Soneira*, José Antonio GonzálezCalero, David Arnau TWG 3 Algebraic Thinking:
Paper presentations 

An instructorgenerated concept framework for elementary algebra in the tertiary context Claire Wladis*, Kathleen Offenholley, Jae Ki Lee, Dale Dawes, Susan Licwinko TWG 3 Algebraic Thinking:
Poster presentations 

Aspects of proficiency in elementary algebra Guido Pinkernell*, Christian Düsi, Markus Vogel TWG 3 Algebraic Thinking:
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Conceptualizing the core of the function concept  A facet model Carina Zindel* TWG 3 Algebraic Thinking:
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Constraints to a justification of commutativity of multiplication Heidi Strømskag*, Anita Valenta TWG 3 Algebraic Thinking:
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Didactic transposition in school algebra: The case of writing equations of parallel and perpendicular lines Valentina Postelnicu* TWG 3 Algebraic Thinking:
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Epistemological and institutional study of algebra in secondary school: the semiotic, semantic and syntactic point of view Samia Achour*, Rahim Kouki, Ali Selmi TWG 3 Algebraic Thinking:
Poster presentations 

‘Father Woodland': A learning environment to facilitate the development of algebraic thinking Ioannis Papadopoulos*, Nafsika Patsiala TWG 3 Algebraic Thinking:
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Functional thinking and generalisation in third year of primary school Eder Pinto*, María C. Cañadas TWG 3 Algebraic Thinking:
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Grade 6 students' abilities to represent functional relationships Isil Isler*, Susanne Strachota, Ana Stephens, Nicole Fonger, Maria Blanton, Angela Gardiner, Eric Knuth TWG 3 Algebraic Thinking:
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Graphing logarithmic functions: Multiple interpretations of logarithms as a basis for understanding Christof Weber* TWG 3 Algebraic Thinking:
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Hierarchical and nonhierarchical clustering methods to study students algebraic thinking in solving an openended questionnaire Benedetto Di Paola*, Onofrio Rosario Battaglia, Claudio Fazio TWG 3 Algebraic Thinking:
Poster presentations 

Introduction to equation solving for a new generation of algebra learners AnnSofi RöjLindberg*, AnnaMaija Partanen, Kirsti Hemmi TWG 3 Algebraic Thinking:
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Making implicit potential explicit key ideas of algebraic thinking in primary school Anna Susanne Steinweg* TWG 3 Algebraic Thinking:
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Students’ and teachers’ mental solving of algebraic equations: from differences to challenges Jérôme Proulx*, MarieLine LavalléeLamarche, KarlPhilippe Tremblay TWG 3 Algebraic Thinking:
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Selfregulated learning and metacognition to enhance translation of natural language to algebraic language in secondary school students María Araceli Juárez Ramírez, Lidia Aurora Hernández Rebollar, José Hugo Lara Solís* TWG 3 Algebraic Thinking:
Poster presentations 

Sense making through algebraic activities: A case study Alik Palatnik*, Boris Koichu TWG 3 Algebraic Thinking:
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Shape patterning tasks: An exploration of how children build upon their observations when asked to construct general terms. Aisling Twohill* TWG 3 Algebraic Thinking:
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The effect of two intervention courses on students’ early algebraic thinking Maria Chimoni*, Demetra PittaPantazi TWG 3 Algebraic Thinking:
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The importance of cognitive abilities during practice and test situations and their connection to mathematical reasoning Mathias Norqvist* TWG 3 Algebraic Thinking:
Poster presentations 

Understanding the concept of vector subspace: A case study of Zimbabwean teachers Lillias H.N. Mutambara, Sarah Bansilal* TWG 3 Algebraic Thinking:
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TWG 4 Geometry 
A scale on cognitive configurations for tasks requiring visualization and spatial reasoning Teresa F. Blanco, Pablo G. Sequeiros*, Cristina Núñez, María Salgado TWG 4 Geometry:
Poster presentations 

Autism and mathematics education Michiel Klaren*, Birgit Pepin, Marieke Thurlings TWG 4 Geometry:
Paper presentations 

Children's blockbuilding: How do they express their knowledge of geometrical solids? Susanne Wöller*, Simone Reinhold TWG 4 Geometry:
Poster presentations 

Constructing draggable figures using Geogebra: the contribution of the DGE for geometric structuring Lina Brunheira*, João Pedro Ponte TWG 4 Geometry:
Paper presentations 

Double perspective taking processes of primary children  adoption and application of a psychological instrument Cathleen Heil* TWG 4 Geometry:
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Diagrams in students' proving activity in secondary school geometry Keith Jones*, Kotaro Komatsu TWG 4 Geometry:
Poster presentations 

Dialogic proceses in collective geometric thinking: a case of defining and classifying quadrilaterals Taro Fujita*, Jonathan Doney, Rupert Wegerif TWG 4 Geometry:
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Geometric constructions in a dynamic environment (GeoGebra): the case of inservice teachers Dorit Cohen*, Anatoli Kouropatov, Regina Ovodenko, Maureen Hoch, Sara Hershkovitz TWG 4 Geometry:
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Hide and think: Limiting the obvious and challenging the mind in geometry Chrysi Papadaki* TWG 4 Geometry:
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Learning to use a protractor: touch screen tablet or not ? Cécile Allard*, Édith Petitfour TWG 4 Geometry:
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Learning sine and cosine in french secondary schools Ratha Loeng* TWG 4 Geometry:
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QEDTutrix: creating and expanding a problem database towards personalized problem itineraries for proof learning Philippe R. Richard*, Michel Gagnon, Michele TessierBaillargeon, Nicolas Leduc TWG 4 Geometry:
Poster presentations 

Shape recognition in early school:how to develop the dimensional deconstruction? Céline Vendeira*, Sylvia Coutat TWG 4 Geometry:
Paper presentations 

Teaching geometry to students (from five to eight years old) " All that is curved and smooth is not a circle" Fabien Emprin*, Jacques Douaire TWG 4 Geometry:
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The construction and study of the ellipse through HuzitaHatori axioms: An investigative activity in analytic geometry classes Bruna Mayara Batista Rodrigues*, Fabiana Chagas de Andrade, Thais de Sales Ribeiro TWG 4 Geometry:
Poster presentations 

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 Antonella Montone*, Eleonora Faggiano, Maria Alessandra Mariotti TWG 4 Geometry:
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The Pythagorean theorem in mathematics laboratory Michela Maschietto*, Stefano Barbieri, Francesca Scorcioni TWG 4 Geometry:
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Transitioning from definitions to proof: exploring nonEuclidean geometry in a college geometry course Janessa Beach, Rebecca Dibbs* TWG 4 Geometry:
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Traveling in spatiality, in spatial sense Catherine Houdement* TWG 4 Geometry:
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What influences grade 6 to 9 pupils' success in solving conceptual tasks on area and volume Veronika Tumova* TWG 4 Geometry:
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TWG 5 Probability and Statistics Education 
Atdistance collegelevel training in statistical methods: Prospects and considerations Maria MeletiouMavrotheris*, Efi Paparistodemou, Ana Serrado TWG 5 Probability and Statistics Education:
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Chilean primary school students levels in reading pictograms Danilo DíazLevicoy, Pedro Arteaga*, Carmen Batanero TWG 5 Probability and Statistics Education:
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Common patterns of thought and statistics: accessing variability through the typical Christian Büscher* TWG 5 Probability and Statistics Education:
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Conditional probability as a decisionmaking tool: a didactic sequence Raimundo Elicer*, Eduardo Carrasco TWG 5 Probability and Statistics Education:
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Do attitudes toward statistics change during an introductory statistics course? A study on Italian psychology students Francesca Chiesi*, Caterina Primi TWG 5 Probability and Statistics Education:
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Enhancing statistical literacy Marianne van DijkeDroogers*, Paul Drijvers, Jos Tolboom TWG 5 Probability and Statistics Education:
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Errors or didactic resources: the design of a teacher education task in the context of Probability Laura Afeltra, Maria Mellone, Piera Romano*, Roberto Tortora TWG 5 Probability and Statistics Education:
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High school students' first experiences with the sampling distribution: toward a distributive perspective of sampling and inference Eleazar Silvestre Castro*, Ernesto Sanchez TWG 5 Probability and Statistics Education:
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Implementing the statistical investigative process with real data: Effects on education in secondary schools Martin Andre* TWG 5 Probability and Statistics Education:
Poster presentations 

Informal statistical inference and preservice primary school teachers: the development of their content knowledge and pedagogical content knowledge during a teacher college intervention Arjen De Vetten*, Judith Schoonenboom, Ronald Keijzer, Bert Van Oers TWG 5 Probability and Statistics Education:
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Insights from students’ reasoning about probability when they design their own scratch games Efi Paparistodemou*, Maria MeletiouMavrotheris, Christina Vasou TWG 5 Probability and Statistics Education:
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Insights into the approaches of young children when making informal inferences about data Aisling Leavy*, Finbarr Sloane TWG 5 Probability and Statistics Education:
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Metaphorical representations of multiface statistical concepts: An access to implicit dominant interpretation by teachers? Corinne Hahn* TWG 5 Probability and Statistics Education:
Poster presentations 

Middle school mathematics teachers’ pedagogical content knowledge in relation to statistical reasoning Rukiye Gokce*, Sibel Kazak TWG 5 Probability and Statistics Education:
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Negotiating the content and the teaching of statistics: Two complementary processes in teachers' professional development Dionysia Bakogianni* TWG 5 Probability and Statistics Education:
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Nonmathematics majors doing statistics: Factors behind performance Theognosia Michailidou* TWG 5 Probability and Statistics Education:
Poster presentations 

Relating theoretical and empirical probability Kristina Penava* TWG 5 Probability and Statistics Education:
Poster presentations 

Students' conception of a sample's relation to the population when constructing models of resampling Jeffrey McLean*, Helen Doerr TWG 5 Probability and Statistics Education:
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Stepwise development of statistical literacy and thinking in a statistics course for elementary preservice teachers Daniel Frischemeier*, Rolf Biehler TWG 5 Probability and Statistics Education:
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Technology will solve student's probability misconceptions: integrating simulation, algorithmics and programming Annarosa Serpe*, Maria Giovanna Frassia TWG 5 Probability and Statistics Education:
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Undergraduate students' perceptions of learning introductory statistics through producing a statistical picture book Natthapoj Vincent Trakulphadetkrai* TWG 5 Probability and Statistics Education:
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Using student models to generate feedback in a university course on statistical sampling Sietske Tacoma*, Paul Drijvers, Peter Boon TWG 5 Probability and Statistics Education:
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Using spreadsheet for teaching probability in French high school Bernard Parzysz* TWG 5 Probability and Statistics Education:
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Using sportrelated socially openended problems to coordinate decisionmaking, variability modeling and value awareness Orlando González*, Somchai Chitmun TWG 5 Probability and Statistics Education:
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Variables characterizing correlation and regression problems in the Spanish high school textbooks Maria M. Gea*, Carmen Batanero, Pedro Arteaga, J. Miguel Contreras TWG 5 Probability and Statistics Education:
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Visualizing Bayesian situations – about the use of the unit square Andreas Eichler, Markus Vogel*, Katharina BöchererLinder TWG 5 Probability and Statistics Education:
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TWG 6 Applications and Modelling 
Choosing a Mathematic Working Space in a modelling task: the influence of teaching Elizabeth Montoya Delgadillo*, Fernanda Viola, Laurent Vivier TWG 6 Applications and Modelling:
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Creating a color palette: the model, the concept, and the mathematics Susana Carreira*, Ana Margarida Baioa TWG 6 Applications and Modelling:
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Developing a classification scheme of definitions of Fermi problems in education from a modelling perspective Jonas Bergman Ärlebäck*, Lluís Albarracín TWG 6 Applications and Modelling:
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Didactical activities to engineering training: methodological proposal Avenilde Romo*, Santiago Tolentino, Rebeca RomoVázquez TWG 6 Applications and Modelling:
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Examining the role of group work as an effective instructional strategy when teaching problem solving Eamonn Clohessy, Patrick Johnson* TWG 6 Applications and Modelling:
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Exploratory study of teacher's interventions in a modelling task Irene Ferrando*, Paula Donat, Pascual Diago, Luis Puig TWG 6 Applications and Modelling:
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Fifth grade students construct decimal number through measurement activities Azam Karimianzade, Abolfazl Rafiepour* TWG 6 Applications and Modelling:
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Geometric modelling inspired by Da Vinci: shaping and adding movement using technology and physical resources Diego Lieban*, Zsolt Lavicza TWG 6 Applications and Modelling:
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Levels of analysis of a mathematical modelling activity: beyond the questionsanswers dialectic Berta Barquero*, Nacho Monreal, Noemí RuizMunzón TWG 6 Applications and Modelling:
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Mathematical modeling and competencies for biology students Yannis Liakos* TWG 6 Applications and Modelling:
Poster presentations 

Mathematical modelling as a prototype for interdisciplinary mathematics education?  Theoretical reflections Rita Borromeo Ferri*, Nicholas Mousoulides TWG 6 Applications and Modelling:
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Mathematical modelling of dynamical systems and implementation at school Martin Bracke, JeanMarie Lantau* TWG 6 Applications and Modelling:
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Mathematical modelling in an archaeological context: their complementarity as essential tool for inquiry Gemma Sala Sebastià*, Vicenç Font Moll, Berta Barquero Farràs, Joaquim Giménez Rodríguez TWG 6 Applications and Modelling:
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Modeling tasks and mathematical work Charlotte Derouet, Alain Kuzniak, Dominique Laval, Elizabeth Montoya Delgadillo, Laurent Moutet*, Assia Nechache, Bernard Parzysz, Laurent Vivier TWG 6 Applications and Modelling:
Poster presentations 

Modelling problems in German grammar school leaving examinations (Abitur) – theory and practice Gilbert Greefrath*, HansStefan Siller, Matthias Ludwig TWG 6 Applications and Modelling:
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Metacognitive modelling competencies in small groups Katrin Vorhölter*, Alexandra Krüger, Lisa Wendt TWG 6 Applications and Modelling:
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Methodology for designing didactical activities as an engineering project of a tactile sensorial therapeutic ramp Luis Siero*, Avenilde Romo, Arturo Abundez TWG 6 Applications and Modelling:
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Phenomenological analysis of the line: a study based on the didactical analysis of mathematical knowledge Guillermo RamírezMontes*, Fabián GutiérrezFallas TWG 6 Applications and Modelling:
Poster presentations 

Product orientation in modeling tasks Wolfgang Bock*, Patrick Capraro, Martin Bracke TWG 6 Applications and Modelling:
Poster presentations 

Strategies for fostering students' reading comprehension while they solve modelling problems Madlin Schmelzer*, Stanislaw Schukajlow TWG 6 Applications and Modelling:
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Teachers’ beliefs about mathematical modelling: An exploratory study Paola Ramirez* TWG 6 Applications and Modelling:
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The investigation of mathematical problem solving processes of fifth grade students in small groups Firdevs İclal Karatas*, Oznur Soyak, Aysenur Alp TWG 6 Applications and Modelling:
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The use of heuristic strategies in modelling activities Peter Stender, Gabriele Kaiser* TWG 6 Applications and Modelling:
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Using auxiliary material for modelling Carolina GuerreroOrtiz*, Jaime Mena Lorca, Astrid Morales TWG 6 Applications and Modelling:
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TWG 8 Affect and Mathematical Thinking 
A case study on Finnish pupils' mathematical thinking: Problem solving and view of mathematics Hanna Viitala* TWG 8 Affect and Mathematical Thinking:
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A characterisation of attitude grounded on proportionality María del Socorro García González*, Rosa María Farfán Márquez TWG 8 Affect and Mathematical Thinking:
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Changing images of mathematics in the transition from school to vocational education Diane Dalby* TWG 8 Affect and Mathematical Thinking:
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Documenting metacognitive activity in qualitative interviews with high school graduates Sebastian Mungenast* TWG 8 Affect and Mathematical Thinking:
Poster presentations 

Emotions and problem solving by prospective primary school teachers Gareth Lewis* TWG 8 Affect and Mathematical Thinking:
Paper presentations 

Exploring affective reactions of children to Scratch programming and mathematics: the case of Kim Johanna Carvajal* TWG 8 Affect and Mathematical Thinking:
Poster presentations 

Exploring daily emotions of a mathematics teacher in classroom: Case of Christian Gustavo Martinez Sierra*, Yuridia ArellanoGarcía, Antonia HernándezMoreno, Cristian NavaGuzmán TWG 8 Affect and Mathematical Thinking:
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Finnish educators’ conceptions of the socialemotional needs of mathematically gifted high school students Eeva Haataja*, Anu Laine TWG 8 Affect and Mathematical Thinking:
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Identifying subgroups of CERME affect research papers Markku S. Hannula*, Enrique Garcia MorenoEsteva TWG 8 Affect and Mathematical Thinking:
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Lower secondary students' experiences of outdoor learning in mathematics  impact on selfregulation and mathematical proficiency Annika Grothérus*, Emilia Fägerstam TWG 8 Affect and Mathematical Thinking:
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Mathematical memory revisited: mathematical problem solving by high achieving students Attila Szabo* TWG 8 Affect and Mathematical Thinking:
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Multiple solutions for realworld problems and students' enjoyment, and boredom Stanislaw Schukajlow*, Kay Achmetli TWG 8 Affect and Mathematical Thinking:
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On the edges of flow: Student engagement in problem solving Peter Liljedahl* TWG 8 Affect and Mathematical Thinking:
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Personal meaning and motivation when learning mathematics Neruja Suriakumaran*, Christoph Duchhardt, Maike Vollstedt TWG 8 Affect and Mathematical Thinking:
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Primary future teachers' expectations towards development courses on mathematics teaching Silvia Funghi* TWG 8 Affect and Mathematical Thinking:
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Positioning and emotions in learning algebra: The case of middle achieving students Wajeeh Daher*, Osama Swidan, Amani Masarwa TWG 8 Affect and Mathematical Thinking:
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Regression trees and decision rules applied to the study of perplexity: Issues and methods Inés M. GómezChacón*, J. Tinguaro Rodríguez TWG 8 Affect and Mathematical Thinking:
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Students' images of mathematics: the role of parents' occupation Ciara Lane* TWG 8 Affect and Mathematical Thinking:
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Selfefficacy and mathematics performance: reciprocal relationships Karin Street*, LarsErik Malmberg, Gabriel J. Stylianides TWG 8 Affect and Mathematical Thinking:
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To err is human. The management and emotional implications of teacher error Elizabeth Lake* TWG 8 Affect and Mathematical Thinking:
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Teaching selfregulation strategies with SOLVE IT to two students with learning disabilities: Effects on mathematical problemsolving performance Paraskevi Keffe*, Irini Dermitzaki, Sotiria Tzivinikou, Charoula Stathopoulou TWG 8 Affect and Mathematical Thinking:
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The qualitative differences in generative characteristic of the aesthetic sensibility: analysis of learners’ problem solving Hayato Hanazono* TWG 8 Affect and Mathematical Thinking:
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The mathematical values in the Turkish middle school mathematics applications course curriculum Gülcin Tan Sisman, Busra Kirez* TWG 8 Affect and Mathematical Thinking:
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The role of affect in failure in mathematics at the university level: the tertiary crisis Pietro Di Martino*, Francesca Gregorio TWG 8 Affect and Mathematical Thinking:
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The suitability of rich learning tasks from a pupil perspective Elisabet Mellroth* TWG 8 Affect and Mathematical Thinking:
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Tracing mathematicsrelated belief change in teacher education programs Çigdem Haser*, Isil Isler TWG 8 Affect and Mathematical Thinking:
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Upper secondary mathematics teachers' beliefs expressed through metaphors Marilena Pantziara*, Marianna Karamanou, Alexandra Petridou TWG 8 Affect and Mathematical Thinking:
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TWG 9 Mathematics and Language 
Authority structures in preservice teachers' talk Konstantinos Tatsis*, Bozena MajTatsis TWG 9 Mathematics and Language:
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Conceptions of the transition from the difference quotient to the derivative in imaginary dialogues written by preservice teachers Annika Wille* TWG 9 Mathematics and Language:
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Constructing mathematical meaning of the cosine function using covariation between variables in a modeling situation in Cabri. Faten Khalloufi Mouha* TWG 9 Mathematics and Language:
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DeafMath: Exploring the influence of sign language on mathematical conceptualization Christina M. Krause* TWG 9 Mathematics and Language:
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Educating to rationality in a narrative context: an experimentation Gemma Carotenuto*, Cristina Coppola, Roberto Tortora TWG 9 Mathematics and Language:
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Effects of linguistic variations of word problems on the achievement in high stakes tests Sabine Schlager*, Jana Kaulvers, Andreas Büchter TWG 9 Mathematics and Language:
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Entering the mathematical register through evolution of the material milieu for classification of polygons Frode Rønning*, Heidi Strømskag TWG 9 Mathematics and Language:
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Ensuring methodological rigor for investigating the discourse development of bilingual mathematics learners Máire Ní Ríordáin*, Eilís Flanagan, Claire Brilly TWG 9 Mathematics and Language:
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Functions: implicit Vivica Zweidar* TWG 9 Mathematics and Language:
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From practical to theoretical thinking: The impact of the roleplay activity Anna Pierri* TWG 9 Mathematics and Language:
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Fostering of interdisciplinary learning through basic education in computer science in mathematics in primary education. Peter Ludes*, Marcus Schütte TWG 9 Mathematics and Language:
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Getting language awareness: A curriculum for language and language teaching for preservice studies for teachers of mathematics Carina Rauf*, Barbara SchmidtThieme TWG 9 Mathematics and Language:
Poster presentations 

How do students develop lexical means for understanding the concept of relative frequency? Empirical insights on the basis of trace analyses Lena Wessel* TWG 9 Mathematics and Language:
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Implicit and explicit processes of establishing explaining practices  Ambivalent learning opportunities in classroom discourse Kirstin Erath* TWG 9 Mathematics and Language:
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Language and risk literacy Dianne Kenton* TWG 9 Mathematics and Language:
Poster presentations 

Language in argumentation and solution of problems with graphs Pier Luigi Ferrari* TWG 9 Mathematics and Language:
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Mistakes as occasions for productive interactions in inclusive mathematics classrooms Uta HäselWeide* TWG 9 Mathematics and Language:
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Multilingual learners’ opportunities for productive engagement in a bilingual GermanTurkish teaching intervention on fractions Alexander SchülerMeyer* TWG 9 Mathematics and Language:
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On the nature of spatial metaphors: dimensions of spatial metaphors and their use among fifth graders Angel Mizzi* TWG 9 Mathematics and Language:
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Professional competences of future mathematics teachers concerning the role of language in mathematics teaching Nadine Krosanke* TWG 9 Mathematics and Language:
Poster presentations 

Rethinking the students' comments in the mathematics notebook: A resourcebased perspective Matías Arce*, Tomás Ortega, Núria Planas TWG 9 Mathematics and Language:
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Revisiting the roles of interactional patterns in mathematics classroom interaction Jenni Ingram*, Nick Andrews, Andrea Pitt TWG 9 Mathematics and Language:
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Talking with objects Marei Fetzer*, Kerstin Tiedemann TWG 9 Mathematics and Language:
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The duck is the biggest  kindergartners talking about measurement and magnitudes Birgit Brandt, Sarah Keuch* TWG 9 Mathematics and Language:
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The discourse of a teacher as a means to promote the objectification of a vector quantity: case of a novice teacher Ulises SalinasHernández*, Luis MorenoArmella, Isaias Miranda TWG 9 Mathematics and Language:
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The role of the classroom teacher in supporting bilingual primary pupils in the learning of mathematics. Miriam Ryan*, Máire Ní Ríordáin TWG 9 Mathematics and Language:
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Which textual features are difficult when reading and solving of mathematics tasks? Anneli Dyrvold* TWG 9 Mathematics and Language:
Poster presentations 

Young children's appropriation of mathematical discouse: learning subtraction in a plurilingual classroom Marie Therese Farrugia* TWG 9 Mathematics and Language:
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TWG 10 Diversity and Mathematics Education: Social and Cultural and Political Challenges 
(Wanting to do) Ethical research in a shifting context Andrea Eikset, Trude Fosse, Troels Lange*, Johan Lie, Magni E. H. Lossius, Tamsin Meaney, Elena Severina TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Paper presentations 

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

Being in the diversity and going through the infinity Cássia Schuck, Cláudia Flores* TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Poster presentations 

Collaborative learning in multigrade mathematics education at primary level RachelAnn Friesen* TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Poster presentations 

Cultural diversity as resource or obstacle for teaching practices in multicultural milieu: an experience of training course for Italian teachers about Chinese Shuxue Benedetto Di Paola*, Giovanni Giuseppe Nicosia TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Paper presentations 

Culturallyinspired mathematics learning Shipra Sachdeva*, PerOdd Eggen, Halvor Hoveid TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Poster presentations 

Contentrelated and social participation in inclusive mathematics education Judith Jung*, Marcus Schütte TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Paper presentations 

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

Exploring Roma learning mathematics: a sociomathematical view Javier DiezPalomar* TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Paper presentations 

How Sámi teachers’ development of a teaching unit influences their selfdetermination Anne Birgitte Fyhn*, Tamsin Meaney, Kristine Nystad, Ylva Jannok Nutti TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Paper presentations 

“I think that practice makes perfect”: Chinese parents' experiences of supporting their children's school mathematics learning in England Tess Bloomfield, Guida de Abreu* TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
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"It is only a test"  social aspects of displaying knowledge in mathematics for Second Language Learners (SLL) Anette Bagger* TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Paper presentations 

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

Incepted neoliberal dreams in school mathematics and the ‘Chilean experience’ Melissa AndradeMolina* TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Paper presentations 

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

Mathematics at the enterprise: Industry, university and school working together to facilitate learning Hans Kristian Nilsen*, Anne Vegusdal TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
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"No, it just didn't work": a teacher's reflections on all attainment teaching Colin Jackson, Hilary Povey* TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
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Polish parents and mathematics education in Swedish preschools Dorota Lembrér* TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
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Reflections of Fröbel in discourses about mathematics in Scandinavian early childhood education and care Andrea Eikset* TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Poster presentations 

Subjective theories of teachers in dealing with heterogeneity Elisa Bitterlich*, Judith Jung, Marcus Schütte TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
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School mathematics education through the eyes of students in Ghana: Extrinsic and intrinsic valuing Wee Tiong Seah*, Ernest Kofi Davis, Monica E. Carr TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Paper presentations 

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

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

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

The context of workplaces as part of mathematics education in vocational studies: Institutional norms and (lack of) authenticity Lisa Björklund Boistrup*, John Keogh TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
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The mathematics teacher’s quasiDarwinism. Problematizing the mathematics education research Alex Montecino* TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
Paper presentations 

The sociopolitics of teacher explanation in mathematics education David Kollosche* TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
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Towards cultural responsiveness in mathematics education Swapna Mukhopadhyay*, Brian Greer TWG 10 Diversity and Mathematics Education: Social, Cultural and Political Challenges:
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TWG 11 Comparative Studies in Mathematics Education 
Algorithmics in secondary school: A comparative study between Ukraine and France Simon Modeste*, Maryna Rafalska TWG 11 Comparative Studies in Mathematics Education:
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Beginning teachers' perspectives on linear equations: A pilot quantitative comparison of Greek and Cypriot students Paul Andrews*, Constantinos Xenofontos TWG 11 Comparative Studies in Mathematics Education:
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Comparing the practices of primary school mathematics teacher education. Case studies from Japan, Finland and Sweden Yukiko AsamiJohansson*, Iiris Attorps, Anu Laine TWG 11 Comparative Studies in Mathematics Education:
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Comparison of Kosovan and Polish preservice teachers' knowledge of fractions Jeta Kingji Kastrati*, Miroslawa Sajka, Eda Vula TWG 11 Comparative Studies in Mathematics Education:
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Crossnational study of lower secondary mathematics teachers’ content knowledge in USA and Russia Mourat Tchoshanov*, Maria Cruz Quinones, Kadriya Shakirova, Elena Ibragimova, Liliana Shakirova TWG 11 Comparative Studies in Mathematics Education:
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Explanations as tools for evaluating content knowledge for teaching: A crossnational pilot study in Cyprus and Greece Constantinos Xenofontos*, Paul Andrews TWG 11 Comparative Studies in Mathematics Education:
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Finnish teaching materials in the hands of a Swedish teacher: The telling case of Cecilia Tuula Koljonen* TWG 11 Comparative Studies in Mathematics Education:
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Kids Inspiring Kids for STEAM (KIKS) Maitane P. Istúriz*, Ignacio GonzálezRuiz, Jose M. DiegoMantecón, Tomás Recio, José B. Búa, Teresa F. Blanco, María J. González, Irene Polo TWG 11 Comparative Studies in Mathematics Education:
Poster presentations 

Research on mathematical literacy in school  Aim, approach and attention Frode Olav Haara, Oda Heidi Bolstad*, Eirik S. Jenssen TWG 11 Comparative Studies in Mathematics Education:
Poster presentations 

Ten years of mathematics education: Preparing for the supermarket? Mona Nosrati*, Paul Andrews TWG 11 Comparative Studies in Mathematics Education:
Paper presentations 

The teaching and learning of relations and functions: A comparative study of Norwegian and Ethiopian textbooks Solomon Tesfamicael*, Geir Botten, Øyvind Lundeby TWG 11 Comparative Studies in Mathematics Education:
Poster presentations 

The lexicon project: examining the consequences for international comparative research of pedagogical naming systems from different cultures David Clarke*, Carmel Mesiti, Yiming Cao, Jarmila Novotna TWG 11 Comparative Studies in Mathematics Education:
Paper presentations 

Visual attention while reading a multiple choice task by academics and students: A comparative eyetracking approach Miroslawa Sajka* TWG 11 Comparative Studies in Mathematics Education:
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TWG 12 History in Mathematics Education 
A course on the philosophy of mathematics for future teachers Elizabeth de Freitas* TWG 12 History in Mathematics Education:
Paper presentations 

Analyzing some algebraic mistakes from a XVI century Spanish text and observing their persistence among present 10th grade students Antonio M. OllerMarcén*, Vicente Meavilla TWG 12 History in Mathematics Education:
Paper presentations 

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

Classification and resolution of the descriptive historical fraction problems Maria T. Sanz*, Bernardo Gómez TWG 12 History in Mathematics Education:
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Design research with history in mathematics education Bjørn Smestad* TWG 12 History in Mathematics Education:
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Historical methods for drawing anaglyphs in geometry teaching Ysette Weiss, Rainer Kaenders* TWG 12 History in Mathematics Education:
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Inquirybased teaching approach in mathematics by using the history of mathematics: a case study Areti Panaoura* TWG 12 History in Mathematics Education:
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Mathematical analysis of informal arguments: A casestudy in teachertraining context Renaud Chorlay* TWG 12 History in Mathematics Education:
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Mathematics at the Royal Danish Military Academy of 1830 Asger Senbergs* TWG 12 History in Mathematics Education:
Paper presentations 

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 Rui Candeias* TWG 12 History in Mathematics Education:
Paper presentations 

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

Primary source projects in an undergraduate mathematics classroom: A pilot case in a topology course Kathleen Clark*, Daniel Otero, Nicholas Scoville TWG 12 History in Mathematics Education:
Paper presentations 

"Sickened by set theory?"  About New Math in German primary schools Tanja Hamann* TWG 12 History in Mathematics Education:
Poster presentations 

Teaching kinematics using history of mathematics Alfredo Martínez*, Olimpia Figueras, François Pluvinage TWG 12 History in Mathematics Education:
Paper presentations 

The concept of infinity  different meanings through the centuries Regina D. Möller*, Peter Collignon TWG 12 History in Mathematics Education:
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The role of genetic approach and history of mathematics in works of Russian mathematics educators (18501950) Ildar Safuanov* TWG 12 History in Mathematics Education:
Poster presentations 

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

Variational strategies on the study of the existence and uniqueness theorem for ordinary differential equations Rodolfo Fallas Soto*, Ricardo Cantoral TWG 12 History in Mathematics Education:
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TWG 13 Early Years Mathematics 
"Two, three and two more equals seven"  Preschoolers' perception and use of structures in sets Priska Schöner*, Christiane Benz TWG 13 Early Years Mathematics:
Paper presentations 

A framework for designing inquiry based activities for early childhood mathematics Chrysanthi Skoumpourdi* TWG 13 Early Years Mathematics:
Paper presentations 

A kindergarten teacher's revealed knowledge in orchestration of mathematical activities Per Sigurd Hundeland*, Ingvald Erfjord, Martin Carlsen TWG 13 Early Years Mathematics:
Paper presentations 

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

Combining historical, foundational, and developmental insights to build children´s first steps in mathematics Ana María Millán Gasca, Elena Gil Clemente*, Ilaria Colella TWG 13 Early Years Mathematics:
Paper presentations 

Discussing school mathematical narratives in early childhood future teacher education Yuly Vanegas*, Joaquin Giménez, Marjorie Samuel TWG 13 Early Years Mathematics:
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Discovering regularities in a geometrical objects environment Bozena MajTatsis*, Ewa Swoboda TWG 13 Early Years Mathematics:
Paper presentations 

Early years mathematics learning  Comparing traditional and inclusive classroom settings Andrea PeterKoop, Miriam Lüken* TWG 13 Early Years Mathematics:
Poster presentations 

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

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

Learning of numerosity through a designed activity with die and towers Reinert Rinvold* TWG 13 Early Years Mathematics:
Poster presentations 

Making maps in kindergarten Geir Olaf Pettersen*, Monica Volden TWG 13 Early Years Mathematics:
Poster presentations 

Making numbers: issues in using manipulatives with young children Sue Gifford*, Rose Griffiths, Jenni Back TWG 13 Early Years Mathematics:
Paper presentations 

Perception, cognition and measurement of verbal and nonverbal aspects of the cardinal concept in bodilyspatial interaction Morten Bjørnebye*, Thorsteinn Sigurjonsson, Tor Solbakken TWG 13 Early Years Mathematics:
Paper presentations 

Preschool class – inquiry and magnets Ana Filipa Silva*, Conceição Costa, António Domingos TWG 13 Early Years Mathematics:
Poster presentations 

Preschool teachers' variations when implementing a patterning task Dina Tirosh, Pessia Tsamir, Ruthi Barkai, Esther Levenson* TWG 13 Early Years Mathematics:
Paper presentations 

Slow down, you move too fast! Jorryt van Bommel*, Hanna Palmér TWG 13 Early Years Mathematics:
Poster presentations 

Teaching intervention for developing generalization in early childhood: the case of measurement Marianna Tzekaki*, Evangelia Papadopouloy TWG 13 Early Years Mathematics:
Paper presentations 

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

Young children's aesthetic development in the context of mathematical explanation Manya Sundström*, Esther Levensen TWG 13 Early Years Mathematics:
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TWG 14 University Mathematics Education 
A digital tool for applying integrals in a kinematic simulation: A perspective on instrumental genesis, epistemic value and semiotic potential Ninni Marie Hogstad*, Ghislain Maurice Norbert Isabwe, Pauline Vos TWG 14 University Mathematics Education:
Paper presentations 

A framework for goal dimensions of mathematics learning support in universities Michael Liebendörfer*, Reinhard Hochmuth, Rolf Biehler, Niclas Schaper, Christiane Kuklinski, Sarah Khellaf, Christoph Colberg, Mirko Schürmann, Lukas Rothe TWG 14 University Mathematics Education:
Paper presentations 

A mathematics educator and a mathematician coteaching mathematics – affordances for teacher education Jason Cooper*, Orit Zaslavsky TWG 14 University Mathematics Education:
Paper presentations 

A micromodel of didactical variables to explore the mathematical organization of complex numbers at upper secondary level Imène Ghedamsi* TWG 14 University Mathematics Education:
Paper presentations 

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

A praxeological approach to Klein’s plan B: crosscutting from Calculus to Fourier Analysis Margo Kondratieva*, Carl Winslow TWG 14 University Mathematics Education:
Paper presentations 

A vector is a line segment?  Students' concept definitions of a vector during the transition from school to university Tobias Mai*, Frank Feudel, Rolf Biehler TWG 14 University Mathematics Education:
Paper presentations 

Access to conceptual understanding  summer courses for linear algebra and analysis after the first semester Kirsten Schmitz*, Ingolf Schäfer TWG 14 University Mathematics Education:
Paper presentations 

An analysis of freshmen engineering students' notes during a preparatory mathematics course Chiara Andra* TWG 14 University Mathematics Education:
Paper presentations 

Approaches to learning of linear algebra among engineering students Ragnhild Johanne Rensaa* TWG 14 University Mathematics Education:
Paper presentations 

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

Developing conceptual knowledge by using ICT on mathematics lessons Maria Slavickova* TWG 14 University Mathematics Education:
Poster presentations 

Discursive shifts from school to university mathematics and lecturer assessment practices: Commognitive conflicts regarding variables Athina Thoma*, Elena Nardi TWG 14 University Mathematics Education:
Paper presentations 

Engineering mathematics between competence and calculation Birgit Griese, Michael Kallweit* TWG 14 University Mathematics Education:
Paper presentations 

Exploring tensions in a mathematical course for engineers utilizing a flipped classroom approach Helge Fredriksen*, Said Hadjerrouit, John Monaghan, Ragnhild J. Rensaa TWG 14 University Mathematics Education:
Paper presentations 

Exploring the types of tools used by engineering undergraduates Marinos Anastasakis*, Carol Robinson, Stephen Lerman TWG 14 University Mathematics Education:
Paper presentations 

French engineers' training and their mathematical needs in the workplace: interlinking tools and reasoning PierreVincent Quéré* TWG 14 University Mathematics Education:
Paper presentations 

Freshmen engineering students: are they all the same? Chiara Andra', Laura Branchetti, Domenico Brunetto* TWG 14 University Mathematics Education:
Paper presentations 

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

Getting into university: From foundation to first year engineering Stephanie TreffertThomas* TWG 14 University Mathematics Education:
Poster presentations 

Heuristic strategies in mathematics teacher education Peter Stender* TWG 14 University Mathematics Education:
Poster presentations 

How are Calculus notions used in engineering? An example with integrals and bending moments Alejandro S. GonzálezMartín*, Gisela HernandesGomes TWG 14 University Mathematics Education:
Paper presentations 

How mathematicians conjecture and prove: an approach from mathematics education Aurora FernándezLeón*, Rocío ToscanoBarragán, José María GavilánIzquierdo TWG 14 University Mathematics Education:
Paper presentations 

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

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

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

Interactive mathematical maps for defragmentation AnnaMaria Schwarz, Matthias Brandl*, Tobias Kaiser, Andreas Datzmann TWG 14 University Mathematics Education:
Poster presentations 

Investigating the discursive shift in the learning of Group Theory: Analysis of some interdiscursive commognitive conflicts Marios Ioannou* TWG 14 University Mathematics Education:
Paper presentations 

Investigating students' difficulties with differential equations in physics Diarmaid Hyland*, Paul van Kampen, Brien Nolan TWG 14 University Mathematics Education:
Poster presentations 

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

Mathematics and medicine: the socioepistemological roots of variation Gloria Angélica Moreno Durazo*, Ricardo Cantoral TWG 14 University Mathematics Education:
Poster presentations 

Metarepresentational competence with linear algebra in quantum mechanics Megan Wawro*, Kevin Watson, Warren Christensen TWG 14 University Mathematics Education:
Paper presentations 

Measuring gains in algebra knowledge at community colleges: Assessing the efficacy of the Algebra PreCalculus Readiness test Irene Duranczyk*, April Strom, Vilma Mesa, Laura Watkins, Nidhi Kohli TWG 14 University Mathematics Education:
Poster presentations 

Navigating through the mathematical world: Uncovering a geometer’s thought processes through his handouts and teaching journals Sepideh Stewart*, Clarissa Thompson, Noel Brady TWG 14 University Mathematics Education:
Paper presentations 

Obstacles to students' understanding of the limit concept Abraham Kumsa*, Kerstin Pettersson, Paul Andrews TWG 14 University Mathematics Education:
Paper presentations 

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

Praxeological analysis: the case of ideals in Ring Theory Praxeological analysis: the case of ideals in Ring Theory Julie Jovignot*, Thomas Hausberger, Viviane DurandGuerrier TWG 14 University Mathematics Education:
Paper presentations 

Q² a game used in a task design of the double quantification Thomas Lecorre* TWG 14 University Mathematics Education:
Paper presentations 

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

Retention and access in online mathematics and science courses Claire Wladis, Katherine Conway*, Alyse Hachey TWG 14 University Mathematics Education:
Paper presentations 

Reflection on didactical design for action: the case of convergence of sequences and of complex numbers Fatma Fattoum*, Raja Tanazefti, Imène Ghedamsi TWG 14 University Mathematics Education:
Poster presentations 

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

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

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

Selfefficacy of engineering students in the introductory phase of studies Ronja Kürten* TWG 14 University Mathematics Education:
Paper presentations 

Supporting university freshmen  an intervention to increase strategic knowledge Thomas Stenzel* TWG 14 University Mathematics Education:
Poster presentations 

To be or not to be an inflection point Regina Ovodenko*, Pessia Tsamir TWG 14 University Mathematics Education:
Paper presentations 

Taylor series: from history to teaching Rahim Kouki*, Yassine HachÏchi TWG 14 University Mathematics Education:
Poster presentations 

Teaching didactics to lecturers: a challenging field Ignasi Florensa, Marianna Bosch*, Josep Gascón, Noemí RuizMunzón TWG 14 University Mathematics Education:
Paper presentations 

Teaching mathematics to nonmathematicians: the case of media technology undergraduate students Evangelia Triantafyllou, Olga Timcenko* TWG 14 University Mathematics Education:
Poster presentations 

The association between engineering students’ selfreported mathematical identities and average grades in mathematics courses Eivind Kaspersen*, Birgit Pepin, Svein Arne Sikko TWG 14 University Mathematics Education:
Paper presentations 

The Flipped Learning Model in teaching abstract algebra Magdalini Lada*, Tore Alexander Forbregd TWG 14 University Mathematics Education:
Poster presentations 

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

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

The proof in formalism: Case of letters' logical status Faïza Chellougui* TWG 14 University Mathematics Education:
Paper presentations 

The transition from high school to university mathematics: a multidimensional process AmaliaChristina Bampili*, Theodossios Zachariades, Charalampos Sakonidis TWG 14 University Mathematics Education:
Paper presentations 

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

Theorising university mathematics teaching: The teaching triad within an activity theory perspective Barbara Jaworski*, Despina Potari, Georgia Petropoulou TWG 14 University Mathematics Education:
Paper presentations 

Undergraduates' reasoning while solving integration tasks: discussion of a research framework Aaltje Berendina Aaten*, Johan Deprez, Gerrit Roorda, Martin Goedhart TWG 14 University Mathematics Education:
Paper presentations 

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

What can calculus students like about and learn from a challenging problem they did not understand? Ofer Marmur*, Boris Koichu TWG 14 University Mathematics Education:
Paper presentations 

"What you see and don't see, shapes what you do and don't do": noticing in first year mathematics lectures Maria Meehan*, Ann O'Shea, Sinead Breen TWG 14 University Mathematics Education:
Paper presentations 

When lecturers disagree on mathematics: The case of the root concept Igor' Kontorovich* TWG 14 University Mathematics Education:
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TWG 15 Teaching Mathematics with Technology and Other Resources 
Pépite online automated assessment and student learning: the domain of equations for grade 8th Stéphane Sirejacob, Françoise ChenevototQuentin*, Brigitte GrugeonAllys TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

A study of the Cornerstone Maths project teachers' classroom practices: geometric similarity using Cornerstone Maths software Ali Simsek*, Nicola Bretscher TWG 15 Teaching Mathematics with Technology and Other Resources:
Poster presentations 

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 Louise Meier Carlsen* TWG 15 Teaching Mathematics with Technology and Other Resources:
Poster presentations 

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

Analysing MOOCs in terms of teacher collaboration potential and issues: the French experience Monica Panero*, Gilles Aldon, Jana Trgalová, Luc Trouche TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

Analyzing MOOCs in terms of teacher collaboration potential and issues: the Italian experience Eugenia Taranto*, Ferdinando Arzarello, Ornella Robutti, Virginia Alberti, Sara Labasin, Sara Gaido TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

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

Coaching and engaging. Developing teaching with CAS in high school Niels Grønbæk, Claus Larsen*, Henrik Bang TWG 15 Teaching Mathematics with Technology and Other Resources:
Poster presentations 

Effect of GeoGebra collaborative and iterative professional development on inservice secondary mathematics teachers' practices Houssam ElKasti*, Murad Jurdak TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

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

Identifying and assessing quality criteria for dynamic mathematics materials on platforms Barbara Kimeswenger* TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

Math teachers' adventure of ICT integration: from an open online course towards an online teacher community Judith Hohenwarter*, Selay Arkün Kocadere, Markus Hohenwarter TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

Out and insourcing, an analysis model for use of instrumented techniques Niels Grønbæk*, Claus Larsen, Henrik Bang TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

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

Planning geometry lessons with learning platforms Andreas Lindenskov Tamborg* TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

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

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

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

Teachers designing ebooks to foster creative mathematical thinking: the case of curvature Angeliki Kolovou, Chronis Kynigos* TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

The development of preservice teachers' TPACK in the use of digital tools Nimer Baya'a*, Wajeeh Daher, Rawan Anabousy, Ahlam Anabousy TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

The role of automated reasoning of geometry statements in mathematics instruction Francisco Botana, Tomas Recio*, M. Pilar Velez TWG 15 Teaching Mathematics with Technology and Other Resources:
Poster presentations 

Using a flipped classroom approach in the teaching of mathematics: a case study of a preservice teachers class Theodosia Prodromou* TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

‘Walking a graph'  primary school students' experimental session on functions and graphs Svein Arne Sikko*, Øistein Gjøvik, Jardar Cyvin, Maria I. M. Febri, Ragnhild L. Staberg TWG 15 Teaching Mathematics with Technology and Other Resources:
Paper presentations 

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

Why do inservice teachers and student teachers use MathCityMap and why don't  A short survey on acceptance and user behavior of MathCityMap Iwan Gurjanow, Matthias Ludwig, Joerg Zender* TWG 15 Teaching Mathematics with Technology and Other Resources:
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TWG 16 Learning Mathematics with Technology and Other Resources 
(Legitimate peripheral) computational thinking in mathematics Laura Broley*, Chantal Buteau, Eric Muller TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

A computerbased collaboration script to mediate verbal argumentation in mathematics Giovannina Albano*, Umberto Dello Iacono, Maria Alessandra Mariotti TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Constructing the shortest path on a cylindrical surface Chronis Kynigos*, Ioannis Zantzos TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Examining motivation in mobile appsupported math trail environments Adi Nur Cahyono, Matthias Ludwig* TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Examples of didactical plans that use Information and Communication Technologies in order to enlarge students' roles in learning and teaching JeanJacques Salone* TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Identifying the reasons behind students’ engagement patterns Emma Howard*, Maria Meehan, Andrew Parnell TWG 16 Learning Mathematics with Technology and Other Resources:
Poster presentations 

Interactive Virtual Math: a tool to support selfconstruction graphs by dynamical relations Sonia Palha*, Stephan Koopman TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Investigating the integration of a digital resource in the mathematics classroom: the case of a creative electronic book on Reflection Eirini Geraniou*, Manolis Mavrikis TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Khan Academy as a resource for preservice teachers: a controlled study James Gray*, Christine Lindstrøm, Kristian Vestli TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Learning mathematics with technology. A review of recent CERME research Ana DonevskaTodorova*, Jana Trgalova TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Mathematical gestures: multitouch technology and the indexical trace Elizabeth de Freitas*, Nathalie Sinclair TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Meaninggeneration through an interplay between problem solving and Constructionism in the cbook technology environment Ioannis Papadopoulos, Dimitris Diamantidis*, Chronis Kynigos TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Nature and characteristics of digital discourse in mathematical construction tasks Florian Schacht* TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Number, arithmetic, multiplicative thinking and coding Krista Francis*, Brent Davis TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Preliminary testing of apps in mathematics, based on international collaborative work Øistein Gjøvik, Iveta Kohanova* TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Realmaterials or simulations? Searching for a way to foster functional thinking Michaela Scheuring*, Jürgen Roth TWG 16 Learning Mathematics with Technology and Other Resources:
Poster presentations 

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

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

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

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

Selfassessment and achievement in mathematics education  the influence of immediate feedback included in a computerbased learning environment. Concept of a research study Elena Jedtke*, Gilbert Greefrath TWG 16 Learning Mathematics with Technology and Other Resources:
Poster presentations 

Technology enhanced Resources for Mathematics Education (TeRMEd) Anne O'Shea, Sinead Breen, Conor Brennan, Frank Doheny, Christine Kelly, Ciarán Mac an Bhaird, Eabhnat Ní Fhloinn, Caitríona Ní Shé*, Brien Nolan, Fiona Lawless, Seamus Mc Loone TWG 16 Learning Mathematics with Technology and Other Resources:
Poster presentations 

The development of the mathematics curriculum in basic education with technology Manuela Subtil*, António Domingos TWG 16 Learning Mathematics with Technology and Other Resources:
Poster presentations 

Using tangible technology to multimodally support algebra learning: The MAL project Thomas Janßen*, David Reid, Angelika BiknerAhsbahs, Anke Reinschlüssel, Tanja Döring, Dmitry Alexandrovsky, Rainer Malaka, Estela Vallejo TWG 16 Learning Mathematics with Technology and Other Resources:
Poster presentations 

Using dynamic and interactive technological tools to support conceptual learning of equations among low achieving students Osama Swidan*, Wajeeh Daher, Nael Darawshi TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

Using dynamic worksheets to support functional thinking in lower secondary school Edith Lindenbauer*, Zsolt Lavicza TWG 16 Learning Mathematics with Technology and Other Resources:
Paper presentations 

When students use podcasts to share their own expertise in building proofs Martine De Vleeschouwer, MarieAnge Remiche* TWG 16 Learning Mathematics with Technology and Other Resources:
Poster presentations 

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TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research 
Abstraction in context and documenting collective activity Michal Tabach*, Chris Rasmussen, Tommy Dreyfus, Rina Hershkowitz TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Paper presentations 

Analyzing verbal interactions in mathematics classroom: connecting different research fields Mariam Haspekian*, Eric Roditi TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Paper presentations 

Causality and temporalization in the construction of reference systems for the treatment of variation: Socioepistemological study Mario CaballeroPérez*, Ricardo Cantoral TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Poster presentations 

Combining two theories in the design for learning about integrals Anatoli Kouropatov*, Tommy Dreyfus TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Paper presentations 

Grundvorstellungen and their application to the concept of extreme points AnnaKatharina Roos* TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Paper presentations 

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

Learning research in a laboratory classroom: Complementarity and commensurability in juxtaposing multiple interpretive accounts Man Ching Esther Chan*, David Clarke TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Paper presentations 

Mathematical competence at work from different perspectives Uwe Schallmaier*, Maike Vollstedt TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Poster presentations 

Mathematics teachers’ resourcing and use of social media: can the ‘prosumer’ concept convey what’s going on? Yvonne Liljekvist* TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Poster presentations 

Metatheoretical aspects of the two case studies of networking theoretical perspectives: focusing on the treatments of theoretical terms in different networking strategies Yusuke Shinno* TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Poster presentations 

Networked theories for a didactical study of mathematics teachers communities JeanPhilippe Georget*, Hussein Sabra TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Paper presentations 

On dialectic and dynamic links between the Mathematical Working Space model and practice in the teaching and learning of mathematics Assia Nechache, Alain Kuzniak* TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Paper presentations 

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

The Mathematical Working Space model: An open and adaptable theoretical framework? Alain Kuzniak*, Charlotte Derouet, Assia Nechache, Laurent Vivier, Bernard Parzysz TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Poster presentations 

The perspective of indexicality: How toolbased actions and gestures contribute to conceptbuilding Daniela Behrens*, Angelika BiknerAhsbahs TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Paper presentations 

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

When a critical aspect is a conception: Using multiple theories to design dynamic computer environments and tasks to promote secondary students’ discernment of covariation Heather Johnson*, Evan McClintock, Peter Hornbein, Amber Gardner, Daniel Grieser TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
Paper presentations 

When the theoretical model does not fit our data: A process of adaptation of the Cognitive Demand model Clara Benedicto, Angel Gutiérrez*, Adela Jaime TWG 17 Theoretical Perspectives and Approaches in Mathematics Education Research:
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TWG 18 Mathematics Teacher Education and Professional Development 
A theoretical framework for analyzing training situations in mathematics teacher education Claire GuilleBiel Winder*, Frédérick Tempier TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Analysing mathematics teacher learning in lesson study  a proposed theoretical framework Aoibhinn Ni Shuilleabhain, Stéphane Clivaz* TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

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

Codisciplinary mathematics and physics research and study courses (RSC) within two groups of preservice teacher education Maria Rita Otero*, Viviana Carolina Llanos, Marcelo Arlego, Maria Paz Gazzola TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Characteristics of a learning environment to support prospective secondary mathematics teachers' noticing of students' thinking related to the limit concept Ceneida Fernández*, Salvador Llinares, M. Luz Callejo, Mar Moreno, Gloria SánchezMatamoros TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Characteristics of preservice primary teachers’ noticing of students’ thinking related to fraction concept subconstructs Àngela Buforn*, Ceneida Fernández, Salvador Llinares, Gloria SánchezMatamoros TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Collaborative research in inservice teacher professional development Jónína Vala Kristinsdóttir* TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

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

Evaluation of a discovery, inquiry and projectbased learning program Hanna Gärtner*, Matthias Ludwig TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

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

From emergency sirens to birdsong Elisabeta Eriksen*, Bjørn Smestad, Annette Hessen Bjerke, Camilla Rodal, Yvette Solomon TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

How to deal with learning difficulties related to functions  assessing teachers' knowledge and introducing a coaching Ute Sproesser*, Markus Vogel, Tobias Dörfler, Andreas Eichler TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Integrating teachers institutional and informal mathematics education: the case of ‘Progetto ArAl’ group in Facebook Nicolina A. Malara*, Giancarlo Navarra TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Innovating teachers' practices: potentiate the teaching of mathematics through experimental activities Maria Cristina Costa*, António Domingos TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Investigating potential improvements of mathematics student teachers' instruction from Lesson Study Reidar Mosvold, Raymond Bjuland*, Janne Fauskanger TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Math centers: A pedagogical tool for student engagement in intermediate math class Amanjot Toor*, Joyce Mgombelo TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Measuring beliefs concerning the double discontinuity in secondary teacher education Viktor Isaev*, Andreas Eichler TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Noticing aspects of example use in the classroom: analysis of a case Pessia Tsamir, Dina Tirosh, Ruthi Barkai*, Esther Levenson TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Preservice mathematics teachers: How to make them ready to be ready Veronika Hubeňáková*, Ingrid Semanišinová, Dušan Šveda TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Prospective teachers interpret student responses: Between assessment, educational design and research Maria Mellone*, Roberto Tortora, Arne Jakobsen, Miguel Ribeiro TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

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

Ritual vs. Explorative classroom participation of preservice elementary school mathematics teachers Talli Nachlieli*, Yafim Katz TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Shifting frames  A teacher's change towards explorative instruction Einat HeydMetzuyanim* TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Situationspecific diagnostic competence of mathematics teachers  a qualitative supplementary study of the TEDSFollowUp project Jessica Hoth* TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Supporting teachers’ practices: A teacher educatorembedded professional development model Scott Courtney* TWG 18 Mathematics Teacher Education and Professional Development:
Poster presentations 

Teachers learning through participatory action research  developing strategies in order to enhance students' language and communication within mathematics in multilingual primary classrooms Margareta Engvall* TWG 18 Mathematics Teacher Education and Professional Development:
Poster presentations 

Tensions in the role of mathematics coaches Annette Rouleau* TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

The impact of professional development on teachers' autonomysupportive teaching practices Janette Bobis*, Jenni Way, Judy Anderson TWG 18 Mathematics Teacher Education and Professional Development:
Poster presentations 

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 Rolf Biehler, Ralf Nieszporek* TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Using a fraction Learning Trajectory as a tool to develop preservice primary teachers' noticing of students' fractional reasoning Pere Ivars*, Ceneida Fernández, Salvador Llinares TWG 18 Mathematics Teacher Education and Professional Development:
Paper presentations 

Writing fictional mathematical dialogues as a training and professional advancement tool for preservice and inservice math teachers Tikva Ovadiya* TWG 18 Mathematics Teacher Education and Professional Development:
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TWG 19 Mathematics Teacher and Classroom Practices 
A case study of a first grade teacher's quality of implementation of mathematical tasks Vuslat Şeker*, Engin Ader TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

A commognitive lens to study preservice teachers' teaching in the context of achieving a goal of ambitious mathematics teaching Gry Anette Tuset* TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

A study of readiness for the integration of 21st century practices in the mathematics classrooms Aibhín Bray*, Elizabeth Oldham, Katriona O'Sullivan TWG 19 Mathematics Teacher and Classroom Practices:
Poster presentations 

Actions of a prospective teacher in different moments of practice: The case of Berta Nadia Ferreira*, João Pedro Ponte TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

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

Changing classroom practice Ove Gunnar Drageset*, Tor Helge Allern TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Considering research frameworks as a tool for reflection on practices: Grainsize and levels of change Siún Nic Mhuirí* TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Critical incidents as a structure promoting prospective secondary mathematics teachers’ noticing Giorgos Psycharis*, Despina Potari TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Evaluation of a rating system for the assessment of metacognitivediscursive instructional quality Edyta Nowińska*, AnnaKatharina Praetorius TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Focusing on the ‘middle ground’ of example spaces in primary mathematics teaching development in South Africa Hamsa Venkat*, Mike Askew TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Longterm learning in mathematics teaching and problematizing daily practice Helén Sterner* TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Mathematical knowledge for teaching and the teaching of mathematics Reidar Mosvold*, Mark Hoover TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Mathematics textbooks and teaching activity Maryvonne Priolet*, Eric Mounier TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

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 Ulla Runesson Kempe*, Anna Lövström, Björn Hellqvist TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Measuring instructional quality in mathematics education Armin Jentsch*, Lena Schlesinger TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Practice of educational planning in mathematics  meaning and relations Helena Grundén* TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Project of mathematical problemsolving in classrooms Maria Beyerl*, Julia Lüddecke TWG 19 Mathematics Teacher and Classroom Practices:
Poster presentations 

"Routes" of recontextualizing mathematical processes through a curriculum reform Anna Klothou, Charalampos Sakonidis* TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Selfscaffolding students' problem solving: testing an orientation basis Joana Villalonga Pons*, Paul Andrews TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Teacher learning in teaching quadratic expressions and equations in Kenyan high schools: Learning study design Fredrick Odindo* TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Teachers' decisions and the transformation of teaching activity Konstantinos Stouraitis* TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

Teachers’ voices related to the mathematical meaning constructed in the classroom Maria Kaldrimidou, Charalampos Sakonidis*, Marianna Tzekaki TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

The interplay between sociomathematical norms and students' use of mental strategies or standard algorithms Bodil Kleve*, Gerd Ånestad TWG 19 Mathematics Teacher and Classroom Practices:
Paper presentations 

The Realization Tree Assessment tool: Assessing the exposure to mathematical objects during a lesson Merav Weingarden*, Einat HeydMetzuyanim, Talli Nachlieli TWG 19 Mathematics Teacher and Classroom Practices:
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TWG 20 Mathematics Teacher Knowledge and Beliefs and Identity 
A high school novice teacher's perception on the effect of content course taken as preservice Fatma AslanTutak*, Tugay Durak TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

A preservice secondary school teacher’s pedagogical content knowledge for teaching algebra Florence Mamba*, Reidar Mosvold, Raymond Bjuland TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

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

An investigation of elementary mathematics teachers' knowledge for teaching algebra Nurbanu Yilmaz*, Ayhan Kursat Erbas TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Analysis of mathematics standardized tests: examples of tasks for teachers Francesca Martignone* TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Anticipating students’ responses through lesson study: A case study with three prospective middle school mathematics teachers Nadide Yilmaz*, I. Elif Yetkin Ozdemir, Bülent Çetinkaya TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Combining two frameworks: a new perspective on mathematics teacher knowledge Knud Thorbjørn Sloth*, Ingi Heinesen Højsted TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Poster presentations 

Describing a secondary mathematics teacher’s specialised knowledge of functions Dinazar EscuderoAvila, Eric FloresMedrano, José Carrillo* TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Developing student teachers' professional knowledge about learning difficulties by "learningteachinglaboratories" Ralf Benölken* TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Didactic assessment over a final work of a master for mathematics teachers in service Adriana Breda*, Luis PinoFan, Vicenç Font, Valderez Lima TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

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

First year student teachers dealing with nonroutine questions in the context of the entrance examination to a degree in Primary Education Aitor Villarreal*, Lluís Albarracín, Núria Gorgorió TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Future mathematics teachers noticing mathematics: knowledgebased reasoning Naďa Vondrová*, Jarmila Robová TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

How do prospective teachers imagine mathematical discussions on fraction comparison? Kristin Krogh Arnesen*, Ole Enge, Yvonne Grimeland, Torkel Haugan Hansen TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Intermediate mathematics teachers’ experiences of teachable moments Amanjot Toor*, Joyce Mgombelo TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Poster presentations 

Intertwining noticing and knowledge in video analysis of self practice: the case of Carla Miguel Ribeiro*, Edelmira Badillo, Glória SánchezMatamoros, Miguel Montes, Genaro de Gamboa TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Investigating Lesson Study as a practicebased approach to study the development of mathematics teachers' professional practice Anita Tyskerud*, Janne Fauskanger, Reidar Mosvold, Raymond Bjuland TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Is teacher knowledge affecting students' transition from primary to second level mathematics education? Niamh O'Meara*, Mark Prendergast, Lorraine Harbison, Clare O'Hara TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Lesson study seen by participants Adriana Richit*, João Pedro Ponte TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Mathematics teachers’ knowledge and professional development in a lesson study context Vanessa Crecci, Miguel Ribeiro*, Dario Fiorentini TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Poster presentations 

Preparing teachers for teaching: does initial teacher education improve mathematical knowledge for teaching? Dun Nkhoma Kasoka*, Arne Jakobsen, Mercy Kazima TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Preservice teachers using the Knowledge Quartet as a tool to analyse and reflect on their own teaching Sindre S. Flesvig*, Tim Rowland, Elisabeta Eriksen TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Preservice elementary teachers' knowledge on comparing decimals based on anthropological theory of the didactic Zetra Hainul Putra* TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

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

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

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

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

The role of definitions on classification of solids including nonprototype examples: The case of cylinder and prism Mine Isiksal*, Secil Yemen Karpuzcu TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Use of analogies in teaching the concept of function: relation between Knowledge of Topics and Knowledge of Mathematics Teaching Gonzalo EspinozaVásquez*, Diana Zakaryan, José Carrillo TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Paper presentations 

Using technology in Formative Assessment: Teachers beliefs Giorgio Bolondi, Roberto Capone*, Federica Ferretti TWG 20 Mathematics Teacher Knowledge, Beliefs and Identity:
Poster presentations 

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

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TWG 21 Assessment in Mathematics Education 
Descriptive Assessment in primary school mathematics education in Iran: a teacher’s perspectives and practice Ali Akbar Sangari*, Marja van den HeuvelPanhuizen, Michiel Veldhuis, Zahra Gooya TWG 21 Assessment in Mathematics Education:
Poster presentations 

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

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

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

Assessment of students' thinking when working with graphs of functions  Promoting preservice teachers' diagnostic competence Rita Hofmann*, Jürgen Roth TWG 21 Assessment in Mathematics Education:
Paper presentations 

Assessment in mathematics as a lever to promote students’ learning and teachers’ professional development Julie Horoks*, Julia Pilet TWG 21 Assessment in Mathematics Education:
Paper presentations 

Cognitive demand of mathematics tasks set in European statewide exit exams  Are some competences more demanding than others? Christina DrükeNoe*, SvenjaMareike Kühn TWG 21 Assessment in Mathematics Education:
Paper presentations 

Designing and analysing the role of digital resources in supporting formative assessment processes in the classroom: the helping worksheets Annalisa Cusi*, Francesca Morselli, Cristina Sabena TWG 21 Assessment in Mathematics Education:
Paper presentations 

Enhancing formative assessment in mathematical class discussion: a matter of feedback Annalisa Cusi, Francesca Morselli*, Cristina Sabena TWG 21 Assessment in Mathematics Education:
Paper presentations 

Examining difficulties in initial algebra: Prerequisite and algebra content areas for Irish postprimary students. Aoife O'Brien*, Máire Ní Ríordáin TWG 21 Assessment in Mathematics Education:
Paper presentations 

From paper and pencil to Computerbased assessment: some issues raising in the comparison Alice Lemmo*, Maria Alessandra Mariotti TWG 21 Assessment in Mathematics Education:
Paper presentations 

Formative assessment  and the component of Adjusted Teacher Instruction Catarina Andersson* TWG 21 Assessment in Mathematics Education:
Paper presentations 

Ireland's Junior Certificate mathematics examination through the lens of the PISA and TIMSS frameworks: Has Project Maths made any difference? Rachel Cunningham*, Seán Close, Gerry Shiel TWG 21 Assessment in Mathematics Education:
Paper presentations 

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

Mathematics teachers' assessment of accounts of problem solving Anna Teledahl* TWG 21 Assessment in Mathematics Education:
Paper presentations 

Mathematics students' attitudes to groupbased project exams compared to students in science and engineering Bettina Dahl* TWG 21 Assessment in Mathematics Education:
Paper presentations 

Preservice mathematics teachers' views about planning the assessment Gözde Kaplan*, Çiğdem Haser TWG 21 Assessment in Mathematics Education:
Paper presentations 

Supporting Chinese primary school teachers' assessment practice in mathematics: effects on student achievement Xiaoyan Zhao*, Marja van den HeuvelPanhuizen, Michiel Veldhuis TWG 21 Assessment in Mathematics Education:
Paper presentations 

Teachers' formative assessment practices: the case of an IBMEcentered course Maud Chanudet* TWG 21 Assessment in Mathematics Education:
Paper presentations 

Teddy bear preschool mathematics assessment: Validation of a constructivist game and storybased measure Sally Moomaw* TWG 21 Assessment in Mathematics Education:
Paper presentations 

The complexity of mathematical thought and the quality of learning: portfolio assessment Fernando Luís Santos, António Domingos* TWG 21 Assessment in Mathematics Education:
Poster presentations 

The Italian national education assessment system: building mathematics items Rossella Garuti, Cristina Lasorsa, Stefania Pozio* TWG 21 Assessment in Mathematics Education:
Paper presentations 

Towards an empirical validation of mathematics teachers' intuitive assessment practice exemplified by modelling tasks XeniaRosemarie Reit* TWG 21 Assessment in Mathematics Education:
Paper presentations 

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

Using external assessments for improving assessment practices of primary school teachers: a first study and some methodological questions Nadine Grapin*, Nathalie Sayac TWG 21 Assessment in Mathematics Education:
Paper presentations 

Written documentations in final exams with CAS Johannes Beck* TWG 21 Assessment in Mathematics Education:
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TWG 22 Curricular Resources and Task Design in Mathematics Education 
Agency as a tool in design research collaborations Andreas Eckert* TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

Asymptotes and asymptotic behavior in graphing functions and curves: an analysis of the Croatian upper secondary education within the anthropological theory of the didactics Aleksandra Čižmešija*, Ana Katalenić, Željka Milin Šipuš TWG 22 Curricular Resources and Task Design in Mathematics Education:
Poster presentations 

Changes in the images and arguing from the mathematics textbooks for the secondary school in Argentina along 67 years Viviana Carolina Llanos*, Maria Rita Otero TWG 22 Curricular Resources and Task Design in Mathematics Education:
Poster presentations 

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

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

Critical evaluation and design of mathematics tasks: preservice teachers Majella Dempsey*, Ann O'Shea TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

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

Designing for responsibility and authority in experiment based instruction in mathematics: The case of reasoning with uncertainty Abdel Mainou Seidouvy*, Andreas Eckert TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

Factors impacting on the collaborative design of digital resources Nataly Essonnier*, Berta Barquero, Christian Mercat, Mohamed ElDemerdash, Jana Trgalova, Mario Barajas, Pedro Lealdino Filho TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

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 Audrey Daina* TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

How to design educational material for inclusive classes Anna Noll*, Jürgen Roth, Markus Scholz TWG 22 Curricular Resources and Task Design in Mathematics Education:
Poster presentations 

Preservice teachers' reflections on task design and implementation Hulya Kilic*, Oguzhan Dogan, Zuhal Yilmaz, Pelin Donmez TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

Programming for 3rd graders, Scratchbased or unplugged? Aaron Gaio* TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

Principles of redesigning an etask based on a paperandpencil task: The case of parametric functions Galit Nagari Haddif* TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

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

Students’ utilization of feedback by an interactive mathematics etextbook for primary level Sebastian Rezat* TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

Tasks to develop flexible multiplicative reasoning Joana Brocardo*, Jean Marie Kraemer, Fátima Mendes, Catarina Delgado TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

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

Teachers' collective documentation work: a case study on tolerance intervals Ghislaine Gueudet, Veronica Parra* TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

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

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 Caitríona Wynne, Lorraine Harbison* TWG 22 Curricular Resources and Task Design in Mathematics Education:
Poster presentations 

The role of design in conceptual change The case of proportional reasoning Noa CohenEliyahu* TWG 22 Curricular Resources and Task Design in Mathematics Education:
Paper presentations 

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

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TWG 23 Implementation of Research Findings in Mathematics Education 
Characterizing theories aimed at supporting teachers’ mathematical classroom practices Per Nilsson*, Andreas Ryve, Maria Larsson TWG 23 Implementation of Research Findings in Mathematics Education:
Paper presentations 

Designing a researchbased detection test for eliciting students' prior understanding on proportional reasoning Linda Ahl* TWG 23 Implementation of Research Findings in Mathematics Education:
Paper presentations 

‘Explicit teaching' as an effective method of acquiring problem solving strategies  The case of ‘working backwards' Miriam Amit*, Yelena PortnovNaaman TWG 23 Implementation of Research Findings in Mathematics Education:
Paper presentations 

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

From theory to praxis Lisser Rye Ejersbo*, Morten Misfeldt TWG 23 Implementation of Research Findings in Mathematics Education:
Paper presentations 

Implementation enterprise through the lens of a theory of diffusion of innovations: A case of online problemsolving forums Boris Koichu*, Nelly Keller TWG 23 Implementation of Research Findings in Mathematics Education:
Paper presentations 

Incorporating mathematical problem solving in the Chilean school curriculum Eugenio Chandia*, Maria Luz Montes TWG 23 Implementation of Research Findings in Mathematics Education:
Poster session 

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

Mapping the logics in practice oriented competence development Andreas Lindenskov Tamborg, Benjamin Brink Allsopp, Simon Skov Fougt, Morten Misfeldt* TWG 23 Implementation of Research Findings in Mathematics Education:
Paper presentations 

Providing a tool for lesson planning in preservice teacher’s education Tone Bulien* TWG 23 Implementation of Research Findings in Mathematics Education:
Paper presentations 

Rehearsals in work with inservice mathematics teachers Anita Valenta*, Kjersti Wæge TWG 23 Implementation of Research Findings in Mathematics Education:
Paper presentations 

Research findings associated with the concept of function and their implementation in the design of mathematics textbooks tasks Mario Sánchez Aguilar*, Apolo Castañeda, Rosa Isela GonzálezPolo TWG 23 Implementation of Research Findings in Mathematics Education:
Paper presentations 

Students' video tutorials as a means for supporting and analyzing their reflections on the limit concept Tinne Hoff Kjeldsen*, Morten Blomhøj TWG 23 Implementation of Research Findings in Mathematics Education:
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The notion and role of "detection tests" in the Danish upper secondary "maths counsellor" programme Uffe Thomas Jankvist*, Mogens Niss TWG 23 Implementation of Research Findings in Mathematics Education:
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Theoretical constructs for early intervention programs in mathematics: who cares?  A Danish example Katrine Kirsted*, Lena Lindenskov TWG 23 Implementation of Research Findings in Mathematics Education:
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Using a Models and Modeling Perspective (MMP) to frame and combine research, practice and teachers' professional development Jonas Bergman Ärlebäck* TWG 23 Implementation of Research Findings in Mathematics Education:
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TWG 24 Representations in Mathematics Teaching and Learning 
Children’s drawings for word problems – design of a theory and an analysis tool Barbara Ott* TWG 24 Representations in Mathematics Teaching and Learning:
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Continuity of the students's experience and systems of representation, an example of teaching and learning in mathematics first grade students. Sophie JoffredoLe Brun*, Mireille Morellato, Gérard Sensevy, Serge Quilio TWG 24 Representations in Mathematics Teaching and Learning:
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Diagrams and mathematical events: Encountering spatiotemporal relationships with graphing technology Francesca Ferrara, Giulia Ferrari* TWG 24 Representations in Mathematics Teaching and Learning:
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Emerging and developing multiplicative structure in lowattaining students' representational strategies: Four key representation types Carla Finesilver* TWG 24 Representations in Mathematics Teaching and Learning:
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Enactive metaphors in mathematical problem solving Daniela DiazRojas, Jorge SotoAndrade* TWG 24 Representations in Mathematics Teaching and Learning:
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Epistemic and semiotic perspectives in the analysis of the use of digital tools for solving optimization problems in the case of distance teacher education Veronica Hoyos* TWG 24 Representations in Mathematics Teaching and Learning:
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How the representations take on a key role in an inclusive educational sequence concerning fraction Elisabetta Robotti* TWG 24 Representations in Mathematics Teaching and Learning:
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Identifying key visualcognitive processes in students' interpretation of graph representations using eyetracking data and math/machine learning based data analysis Enrique Garcia MorenoEsteva*, Sonia White, Joanne Wood, Alexander Black TWG 24 Representations in Mathematics Teaching and Learning:
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Maths Welcome Pack: a multisensory introduction to mathematics for high school students Giulia Bini* TWG 24 Representations in Mathematics Teaching and Learning:
Poster session 

Middle school students’ employments of gestural signs: a case study Samet Okumus*, Karen Hollebrands TWG 24 Representations in Mathematics Teaching and Learning:
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Preservice mathematics teachers’ types of mathematical thinking: use of representations, visualspatial abilities, and problem solving performances Beyza Olgun*, Engin Ader TWG 24 Representations in Mathematics Teaching and Learning:
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Representations of fractions in mathematics education what do students´learn? Cecilia Sveider* TWG 24 Representations in Mathematics Teaching and Learning:
Poster session 

Representing subset relations with tree diagrams or unit squares? Katharina BöchererLinder*, Andreas Eichler TWG 24 Representations in Mathematics Teaching and Learning:
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Teaching mathematics with multimediabased representations − what about teachers' competencies? Julia Ollesch, Fabian Gruenig*, Tobias Doerfler, Markus Vogel TWG 24 Representations in Mathematics Teaching and Learning:
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The role of representations in promoting the quantitative reasoning Lurdes Serrazina*, Margarida Rodrigues TWG 24 Representations in Mathematics Teaching and Learning:
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The use of artifacts and different representations by producing mathematical audiopodcasts Christof Schreiber*, Rebecca Klose TWG 24 Representations in Mathematics Teaching and Learning:
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Using tangible materials in upper secondary math education as a way of creating concept images Marit Schou* TWG 24 Representations in Mathematics Teaching and Learning:
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Visuospatial abilities and geometry: a first proposal of a theoretical framework for interpreting processes of visualization Elisa Miragliotta*, Anna BaccagliniFrank TWG 24 Representations in Mathematics Teaching and Learning:
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