TY - BOOK AU - Billstein,Rick AU - Libeskind,Shlomo AU - Lott,Johnny W. TI - A problem solving approach to mathematics for elementary school teachers SN - 0805303901 AV - QA135.5QA135.5 .B49 1990.B49 U1 - 372.7 20 PY - 1990/// CY - Redwood City, Calif. PB - Benjamin/Cummings KW - Mathematics KW - Study and teaching (Elementary) KW - Problem solving N1 - Includes bibliographical references (p. 933) and index ER -