Heddens, James W. <br/><br/>
Today's mathematics Part 1:  concepts and classroom methods / 
James W. Heddens [and] William R.Speer. 
 - 10th ed. 
 - New York :  John Wiley,  2001. 
 - xii, 381 p :  ill. ;  28 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0471387940  (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)