title: [On the acquisition of the first mathematical notions and their alterations. I. Phantasm and mathematical concept].
mesh_terms: D002648:Child; D003210:Concept Formation; D006801:Humans; D007092:Imagination; D007858:Learning; D008433:Mathematics
vernacular_title: Réflexions sur l'acquisition des premiéres notions mathématiques et ses vicissitudes. I. Fantasme et concept mathématique.