Cover image for Picturing addition : from models to symbols
Picturing addition : from models to symbols
Title:
Picturing addition : from models to symbols
Personal Author EPSB:
Year Published:
1977
Physical Description:
188 pages : illustrations ; 28 cm
ISBN:
9780884880721

9780884878162
Publisher:
Palo Alto, Ca. : Creative Publications, 1977.