Bahr, Damon L. <br/><br/>
Elementary mathematics is anything but elementary :   content and methods from a developmental perspective / 
Damon L. Bahr. 
 - Australia ; Belmont, CA :  Wadsworth Cengage Learning,  2010. 
 - xx, 517 p.:   ill.  28 cm. 
<br/><br/> Includes bibliographic references and index 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>9780618928170 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>372.7 B14e