01083cam a2200253 a 4500 21107 21107 13026520 OSt 20170121084849.0 021210s2004 maua b 001 0 eng 2002043767 020538689X DLC DLC DLC QA135.6 .V36 2004 510/.71/2 21 Van de Walle, John A. Elementary and middle school mathematics : teaching developmentally / John A. Van de Walle. 5th ed. Boston : Allyn and Bacon, c2004. xxvii, 468 p. : col. ill. ; 28 cm. Includes bibliographical references and index. Mathematics Study and teaching (Elementary) Mathematics Study and teaching (Middle school) 7 cbc orignew 1 ocip 20 y-gencatlg lcc BOOKS QA 135.6 .V36 2004