Teaching mathematics in grades K-8 :  research-based methods / 
edited by Thomas R. Post. 
 - 2nd ed. 
 - Boston :  Allyn and Bacon,  c1992. 
 - xviii, 510 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0205134149 
<br/><br/><label>LCCN: </label>91038828 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>QA135.5  QA135.5  / .T399 1992  / .T399 
<br/><br/><label>Dewey Class. No.: </label>372.7