TY - BOOK AU - Lundsteen, Sara W. AU - ED - ED - ED - ED - TI - : a problem-solving approach SN - 60440945 SN - 2 PY - 1989///];copyright 1989.46 CY - New York PB - Harper & Row KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Language arts (Elementary) N1 - Includes indexes; Bibliography: p. 533-573; 5 ER -