TY - BOOK AU - Koomen,Michele TI - Sets: sorting into groups SN - 0736808221 AV - QA248 .K62 2001 U1 - E511.3/22 21 PY - 2001/// CY - Mankato, MN PB - Capstone KW - Set theory KW - sears N1 - Includes bibliographical references and index; AR; K-3; 2.7; Accelerated Reader AR; LG; 2.7; 0.5; 43999 N2 - Simple text, photos, and illustrations introduce sets by sorting size, shapes or colors into groups ER -