Nicolas Herscovics

A cognitive gap between arithmetic and algebra

Liora Linchevski, N. Herscovics, L. Linchevski, 1994 .

Proceedings of the Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education (5th, Montreal, Quebec, Canada, September 29-October 1, 1983). Volumes 1 and 2.

Jacques Bergeron, Nicolas Herscovics, 1983 .

Crossing the cognitive gap between arithmetic and algebra: Operating on the unknown in the context of equations

Liora Linchevski, N. Herscovics, L. Linchevski, 1996 .