Vol. 3 Num. 1 (1983) Philip J. Davis Toward a philosophy of computation2 Frances Rosamond Listening to our students6 David Pimm Why the history and philosophy of mathematics should not be rated X12 Willem Kuyk A neuropsychodynamical theory of mathematics learning16 Jens Holger Lorenz Research since 1976 on affective student characteristics24 Abraham Arcavi ,  Maxim Bruckheimer ,  Ruth Ben-Zvi Maybe a mathematics teacher can profit from the study of the history of mathematics30 Larry Copes The Perry development scheme: a metaphor for learning and teaching mathematics38 David Wheeler Communication: Mathematization matters45