Mois : mars 1999

Abstract Current research in the didactics of mathematics usually underrates the role played in mathematics by what, due to their perceptual nature, we call ostensive objects, i.e. both the written and the spoken word, all kinds of symbolisms, graphical representations, and even gestures. In contradistinction to this widespread view, the anthropological approach assigns a vital … Lire la suite

Abstract Several research works, since more than fifty years, have been dedicated to the construction by children of the concept of number, in particular whole numbers. Many aspects regarding the manipulation of collections and operations on these collections have been studied. Yet, paradoxically, enumeration has hardly ever been considered as a fundamental component of counting … Lire la suite

Résumé L’article rend compte de quelques aspects d’une expérience d’ingénierie didactique dans le domaine de l’algèbre linéaire, visant la création des conditions d’apprentissage permettant aux étudiants d’éviter ce qui a été appelé, dans la littérature, l’ »obstacle du formalisme ». L’article est centré sur la notion d’application linéaire et son introduction dans l’environnement informatique de Cabri-géomètre II. … Lire la suite