Vol. 4 Num. 2 (1984) Jan van den Brink Acoustic counting and quantity counting2 Geoffrey Howson The questions remain the same: only the solutions change14 Azri Evyatar Problem solving or mathematics18 David Wheeler Editorial24 Celia Hoyles , Judith Armstrong , Rosalinde Scott-Hodgetts , Linsay Taylor Towards an understanding of mathematics teachers and the way they teach25 Dick Tahta Comment32 Caleb Gattegno Curriculum and epistemology33 Jere Confrey , Alan Bishop , Efraim Fischbein , Willem Kuijk , Gérard Vergnaud Communication: Research problems in mathematics education - II39