Making number sense a sourcebook for developing numeracy

Manylion Llyfryddiaeth
Prif Awdur:	Ritchhart, Ron
Fformat:	Llyfr
Iaith:	Saesneg
Cyhoeddwyd:	Menlo Park, Calif. Addison-Wesley c1994.
Pynciau:	Numeracy > Study and teaching (Elementary) Mathematics > Study and teaching (Elementary)