Vol. 2 Num. 3 (1982) David Wheeler Editorial2 David Robitaille , Michael Dirks Models for the mathematics curriculum3 John Mason Attention21 Charles Cassidy , Bernard Hodgson Résolution élémentaire de problèmes24 Joseph Agassi Mathematics education as training for freedom28 Ken Clements Visual imagery and school mathematics (concluded)33 Maligie Sesay On the stability of symbols for the learning and teaching of mathematics39 Arthur Morley Communication: Should a mathematics teacher know something about the history of mathematics?46