Prior, Jennifer O. <br/><br/>
Math games to master basic skills :   addition & subtraction / 
Jennifer O. Prior. 
 - New York :  Scholastic Teaching Resources,  2007. 
 - 48 p. : ill.:  27 cm. 
<br/><br/> grades 2-3 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>13: 978-0-439-55415-2 
<br/><br/><label>LC Class. No.: </label>372.7044 P93m