Helping children learn mathematics. 

 - 6th ed. /  Robert E. Reys ... [et al.]. 
 - New York :  Wiley,  c2001. 
 - xiii, 410 p. :  ill. (some col.) ;  28 cm. 
<br/><br/><label>ISBN: </label>0471367850 (paper : alk. paper) 
<br/><br/><label>LCCN: </label>00027637  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>QA135.5  / .R49  2001 
<br/><br/><label>Dewey Class. No.: </label>372.7/044