Billstein, Rick <br/><br/>
A problem solving approach to mathematics for elementary school teachers / 
Rick Billstein, Shlomo Libeskind, Johnny W. Lott 
 - 9th ed. 
 - Boston  Pearson Addison Wesley  2007 
 - xvii, 1031p.  ill. (some col.)  27cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0321331796  RM431.31 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)<br/>Problem solving--Study and teaching (Elementary)