Reys, Robert E. <br/><br/>
Helping children learn mathematics / 
Robert E. Reys, Marilyn N. Suydam, Mary Montgomery Lindquist. 
 - 4th ed. 
 - Boston :  Allyn and Bacon,  1995. 
 - 371 p. :  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>0205162568  RM121.44 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary).