Reys, Robert E. <br/><br/>
Helping children learn mathematics / 
Robert E. Reys, Marilyn N. Suydam, Mary Montgomery Lindquist. 
 - 4th ed. 
 - Boston :  Allyn and Bacon,  c1995. 
 - xi, 371 p. :  ill. ;  28 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0205162568 (acidfree paper) 
<br/><br/><label>LCCN: </label>94033394  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>QA135.5  / REY 1995 
<br/><br/><label>Dewey Class. No.: </label>372.7