Bender, William N. <br/><br/>
Differentiating math instruction, K-8 : common core mathematics in the 21st century classroom / 
Bender, William N. 
 - Thousand Oaks:  Corwin Press,  2013. 
 - viii, 295p.; 24cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9781452255453 
<br/><br/><label>Dewey Class. No.: </label>372.70973 BEN