00600nam a2200169Ia 450000100060000000300050000600500170001100800410002805000250006908200140009410000320010824501010014026000590024130000230030050400510032365000560037484809BIBL20160527203640.0830103s1970    nyua     b    00110 eng  0 aQA135.5b.C5957 19700 a372.721910aCopeland, Richard W.2Local10aHow children learn mathematicsbteaching implications of Piaget's researchcRichard W. Copeland.0 aNew YorkbMacmillanaLondonbCollier Macmillancc1970.  aviii, 310 p.bill.  aIncludes bibliographical references and index. 0aMathematicsxStudy and teaching (Elementary)2Local