Van de Walle, John A. <br/><br/>
Elementary and middle school mathematics :   teaching developmentally / 
John A. Van de Wallace , Karen S. Karp, Jennifer M. Bay-Williams 
 - Ninth edition 
 - New York :  Pearson,  c2015. 
 - 631 pages :  illustrations ;  28 cm. 
<br/><br/><label>ISBN: </label>9781292097695 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--teaching and study middle school.
<br/><br/><label>Dewey Class. No.: </label>Circ. 510.71 V217 2015