Vol. 10 Num. 3 (1990) Nicolas Balacheff Beyond a psychological approach: the psychology of mathematics education2 Raffaella Borasi , Marjorie Siegel Reading to learn mathematics: new connections, new questions, new challenges9 Tamara Lemerise Can we integrate Logo into the regular mathematics curriculum and still preserve the Logo spirit?17 Ubiratan D'Ambrosio The role of mathematics education in building a democratic and just society20 Anna Sierpinska Some remarks on understanding in mathematics24 Stephen Brown Communication: The right to be wrong37 Abe Shenitzer Communication: A mathematics lesson38 Laurinda Brown Communication: Some thoughts on the use of Instructional Technology in schools and colleges39 Dick Tahta Communication: Papuans are almost always right40 Klaus-Dieter Graf , Bernard Hodgson Popularizing geometrical concepts: the case of the kaleidoscope42 Valerie Walkerdine Difference, cognition, and mathematics education51