Piagetian cognitive - devleopment research and mathematical education /
Edited by Myron F. Rosskopf, Leslie P. Steffe [and] Stanley Taback.-
- Washington : National Council of Teachers of Mathematics, 1971.
- xi, 243p.: illus.
''Proceedings of a conference conducted at Columbia University, October 1970''.
Mathematics --Congresses.--Study and teaching (Elementary) Cognition (Child psychology)--congresses