TY - BOOK AU - Billstein,Rick AU - Libeskind,Shlomo AU - Lott,Johnny W. TI - A problem solving approach to mathematics for elementary school teachers SN - 0805308652 AV - QA135.5 .B49 1987 U1 - 372.7 PY - 1987/// CY - Menlo Park, California PB - Benjamin/Cummings Pub. Co. KW - Mathematics KW - Study and teaching (Elementary) KW - Problem solving N1 - Ill. on lining papers; Includes bibliographies and index ER -