Van de Walle John A <br/><br/>
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. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>020538689X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching Elementary<br/>Mathematics--Study and teaching Middle school
<br/><br/><label>LC Class. No.: </label>QA135.6 
<br/><br/><label>Dewey Class. No.: </label>510/.71/2