Improving mathematics programs trends and issues in the elementary school.

Manylion Llyfryddiaeth
Prif Awdur:	Devault, M. Verde e d.
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	Columbus, Ohio Merrill c1961.
Pynciau:	Arithmetic > Study and teaching (Elementary). Mathematics > Study and teaching (Elementary).