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in Proceedings of the 33rd Conference of the International Group for the Psychology of Mathematics Education (2009)
in Proceedings of the 3rd meeting for Elementary Mathematics Education (2009)
in Philosophical Psychology (2008), 21
Book published by Instituto Piaget (2008)
in Informations Pédagogiques (2008), 60
in Informations Pédagogiques (2008)
in Actes du 59th Conference of the Commission Internationale pour l' Etude et l' Amélioration de l' Enseignement des Mathématiques (2007)
Scientific Conference (2007)
Scientific Conference (2006)
in Jarmila, Novotná (Ed.) Proceedings of the 30th International Conference for the Psychology of Mathematics Education (2006)
in Actes du 19e colloque de l'Association pour le Développement des Méthodologies et Evaluation en Education (ADMEE) (2006)
in Powerful environments for promoting deep conceptual and strategic learning (2005)
in Crahay, Marcel; Verschaffel, Lieven; De Corte, Erik (Eds.) et al Enseignement et apprentissage des mathématiques : Que disent les recherches psychopédagogiques? (2005)
Scientific Conference (2005)
Doctoral thesis (2005)
Scientific Conference (2004)
in Informations Pédagogiques (2004), 55
in Learning and Instruction (2004)
in Informations Pédagogiques (2004), 56
in Informations Pédagogiques (2003), 53
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What do students say about the role of the minus sign in polynominals?
