TY  - BOOK
AU  - Sobel,Max A.
TI  - Teaching mathematics: A sourcebook of aids, activities and strategies 
SN  - 0138941556
PY  - 1988///
CY  - New Jersey
PB  - Prentice Hall
KW  - Mathematics
KW  - Study and teaching (secondary)
N1  - Includes index
ER  -