Maria Meehan (Ireland) Roza Leikin (Israel) WG15: Comparative Studies in Mathematics Education Birgit Pepin (United Kingdom) Eva Jablonka (Germany) Richard Cabassut (France) CERME 6 at Lyon, France (2009) Leader Co-leaders WG1: Affect and mathematical thinking Markku Hannula (Finland) Tine Wedege (Norway) Marilena Pantziara (Cyprus) WG2: Argumentation and proof Alessandra Mariotti (Italy) Patrick (France) Leonor Camargo (Colombia) Kristina (Germany) WG3: Stochastic thinking Andreas Eichler (Germany) Gabriella Ottaviani (Italy) Dave Pratt (United Kingdom) Floriane Wozniak (France) WG4: Algebraic thinking Giorgio Bagni (Italy) Janet Ainley (United Kingdom) Lisa Hefendehl-Hebeker (Germany) Jean-Baptiste Lagrange (France) WG5: Geometrical thinking Alain Kuzniak (France) Iliada Elia (Cyprus) Mathias Hattermann (Germany) Filip Roubicek (Czech Republic) WG6: Mathematics and language Candia Morgan (United Kingdom) Marie-Thérèse Farrugia (Malta) Marei Fetzer (Germany) Alain Mercier (France) WG7: Technologies and resources in mathematical education Ghislaine Gueudet (France) Rosa Maria Bottino (Italy) Stephen Hegedus (USA) Weigand (Germany) WG8: Cultural diversity and mathematics education Guida de Abreu (United Kingdom) Nuria Gorgorio (Spain) Sarah Crafter (United Kingdom) WG9: Different theoretical perspectives / approaches in research in mathematics education Susanne Prediger (Germany) Marianna Bosch (Spain) Ivy Kidron (Israel) John Monaghan (United kingdom) Gérard Sensevy (France) WG10: From a study of teaching practices to issues in teacher education Leonor Santos (Portugal) José Carrillo (Spain) Hospesová (Czech Republic) Maha Abboud-Blanchard (France) WG11: Applications and modelling Morten Blomhoej (Denmark) Susana Carreira (Portugal) Katja Maass (Germany)
WG7: Mathematical potential, creativity and talent Roza Leikin (Israel) Andreas Ulovec (Austria) Mihaela Singer (Romania) Demetra (Cyprus) WG8: Affect and mathematical thinking Marilena Pantziara (Cyprus) Wolfgang Schloeglmann (Austria) Kjersti Wæge (Norway) Pietro Di Martino (Italy) WG9: Mathematics and language Maria Luiza Cestari (Norway) Mercier (France) Pier Luigi Ferrari (Italy) Konstantinos Tatsis (Greece) WG10: Diversity and mathematics education: social, cultural and political challenges/issues Paola Valero (Denmark) Sarah Crafter (United Kingdom) Uwe Gellert (Germany) Núria Gorgorió (Spain) WG11: Comparative studies in Mathematics Education Eva Jablonka (Sweden) Paul Andrews (United Kingdom) Sigrid Blömeke (Germany) Antoine Bodin (France) WG12: History in mathematics education Uffe Thomas Jankvist (Denmark) Jan van Maanen (The Netherlands) Constantinos Tzanakis (Greece) Snezana Lawrence (United Kingdom) WG13: Early Years Mathematics Götz Krummheuer (Germany) Patti Barber (United Kingdom) Ingvald Erfjord (Norway) Ema Mamede (Portugal) Iliada Elia (Cyprus) WG14: University mathematics education Elena Nardi (United Kingdom) Paola Iannone (United Kingdom) Ghislaine Gueudet (France) Alejandro González-Martin (Canada/Spain) Carl Winsløw (Denmark) WG15: Technologies and resources in mathematics education Jana Trgalova (France) Mirko Maracci (Italy) Vlasta Kokol Voljc (Slovenia) Anne Berit Fuglestad (Norway) Hans-Georg Weigand (Germany) WG16: Different theoretical perspectives and approaches in research in mathematics education Ivy Kidron (Israel) John Monaghan (United Kingdom) Gérard Sensevy (France) Angelica Bikner-Ahsbahs (Germany) Luis Radford (Canada/Italy) WG17: From a of teaching practices to issues in teacher education Leonor Santos (Portugal) Claire Berg (Norway) Despina Potari (Greece) Laurinda Brown (United Kingdom)
WG12: History in Mathematics Education Uffe Thomas Jankvist (Denmark) Kathy Clark (USA) Snezana Lawrence (UK ) Jan van Maanen (The Netherlands) WG13: Early Years Mathematics Mariolina Bartolini Bussi (Italy) Ingvald Erfjord (Norway) Esther Levenson (Israel) Cecile Ouvrier-Buffet (France) WG14: University mathematics education Elena Nardi (United Kingdom) Ghislaine Gueudet (France) Alejandro S. González-Martin (Spain/Canada) Carl Winsløw (Denmark) Irene Biza (United Kingdom) WG15: Technologies and resources in mathematics education Jana Trgalova (France) Mirko Maracci (Italy) Giorgos Psycharis (Greece) Hans Georg Weigand (Germany) WG16: Different theoretical perspectives / approaches in research in mathematics education Ivy Kidron (Israel) Mariana Bosch (Spain) John Monaghan (United Kingdom) Luis Radford (Canada) WG17: From a study of teaching practices to issues in teacher education Despina Potari (Greece) Claire Berg (Norway) Charalambos Charalambous (Cyprus) C. Miguel Ribeiro (Portugal) Leonor Santos (Portugal) Skott (Denmark/Sweden) Lourdes Figueiras (Spain) Alena Hospesová (Czech Republic) Stefan Zehetmeier (Austria) CERME 9 at Prague, Czech Republic (2015) Leader Co-leaders TWG1: Argumentation and Samuele Antonini (Italy) Orly Buchbinder (United States) Kirsten Pfeiffer (Ireland) Gabriel Stylianides (United Kingdom) TWG2: Arithmetic and number systems Sebastian Rezat ( Germany) Véronique Battie (France) Lisser Rye Ejersbo (Denmark) Darina Jirotkova Republic) TWG3: Algebraic thinking Jeremy Hodgen (UK) Heidi Strømskag Måsøval (Norway) Valentina Postelnicu (Romania / USA)
Christiane Benz (Germany) Bożena Maj-Tatsis (Poland) TWG14a: University mathematics education Alejandro Gonzalez Martin (Canada) Fabrice Vandebrouck (France) Imène Ghedamsi (Tunisia) Alon Pinto (Israel) TWG 14b: University mathematics education Irene Biza (United Kingdom) Olov Viirman (Sweden) Cooper (Israel) Thomas Hausberger (France) TWG15: Teaching mathematics with resources and technology Alison Clark-Wilson (UK) Ornella Robutti (Italy) Gilles Aldon (France) Kohanova (Slovakia) TWG16: Students’ learning mathematics with resources and technology Hans-Georg Weigand (Germany) Paul Drijvers (The Netherlands) Eleonora Faggiano (Italy) Eirini Geraniou (UK) Nathalie Sinclair (Canada) TWG17: Theoretical perspectives and approaches in mathematics education research Angelika Bikner (Germany) Mariam Haspekian (France) Arthur Bakker (The Netherlands) Marracci (Italy) TWG18: Mathematics teacher education and professional development Stefan Zehetmeier (Austria) Laurinda (United Kingdom) Gulseren Karagoz Akar (Turkey) Leonor Santos (Portugal) Maria Mellone (Italy) TWG19: Mathematics teacher and classroom practices Charalampos Sakonidis (Greece) Rukiye Didem Taylan (Turkey) Reidar Mosvold (Norway) Jeppe Skott (Denmark / Sweden) Ove Gunnar Drageset (Norway) Mathematics teacher knowledge, beliefs and identity Miguel Ribeiro Sebastian Kuntze (Germany) Kirsti Rø (Norway) Fatma Aslan Tutak (Turkey) Francesca Martignone (Italy) Amanjot Toor (Canada) TWG21: Assessment in mathematics education Paola Iannone (UK) Michal Ayalon (Israel) Jeremy Hodgen (UK) Michiel Veldhuis (The Netherlands) TWG22: Curricular resources and task design in mathematics education Birgit Pepin (The Netherlands) Andreas Stylianides (UK) Sebastian (Germany) Seán Delaney (Ireland)