TY  - BOOK
AU  - Copeland, Richard W
TI  - How children learn mathematics:  teaching implications of piagets resourch
SN  - 0023247703
AV  - QA 135.5 .C57 1984 
PY  - 1984///
CY  - New York
PB  -  Macmillan publishing co.
KW  - Mathematics-Study And Teaching[Elementary]
ER  -