TY  - BOOK
AU  - Del Grande,John J.
TI  - Geoboards and motion geometry for elementary teachers 
U1  - 372.7 
PY  - 1972///.
CY  - Glenview : 
PB  - Scott, Foresman and Company, 
KW  - Geometry--Study and teaching (Elementary)--Audio-visual aids
N1  - Includes index.
ER  -