TY  - BOOK
AU  - Reys, Robert E.
AU  - Suydam, Marilyn N.
TI  - Helping children learn mathematics
SN  - 013386426X
AV  - QA135.5.R49 1989 
PB  - Prentice-Hall
KW  - Mathematics - Study and teaching ( Elementary )
KW  - QA
N1  - Includes bibliographical references and index
ER  -