Predicting the relative difficulty of verbal arithmetic problems Max JermanRaymond Rees OriginalPaper Pages: 306 - 323
An exploratory investigation of basic mathematical abilities of kindergarten children Joseph M. ScanduraRobert McGee OriginalPaper Pages: 331 - 345
Quelques études pour contribuer à l'observation du comportement mathématique des non-mathématiciens Josette Adda OriginalPaper Pages: 368 - 392