Heddens, James W.,  1925- <br/><br/>
Today's mathematics :  concepts and methods in elementary school mathematics. 
James W. Heddens, William R. Speer. 
 - 7th ed.  
 - New York :  Toronto :  New York :  Macmillan ;  Maxwell Macmillan Canada ;  Maxwell Macmillan International,  c1992. 
 - xi, 656 p. :  ill. ;  28 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0023529334 (pbk.) 9780023529337 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>QA135.6  / .K73 1992 
<br/><br/><label>Dewey Class. No.: </label>372.7  / HJT