Proceedings ofthe ninth international conference for the psychology of maths education
Subtitle: [held at] Noordwijkerhout, July 22nd - July 29th, 1985
By: edited by Leen Streefland. Vol.2, Plenary addresses and invited papers.
Contributors: Streefland, Leen, 1939-; International Group for the Psychology of Mathematics Education.
Publisher: State University of Utrecht; Research Group on Mathematics Education and Educational Computer Centre
Published: 1985
Place of publication: Utrecht
Language: eng