Mahaffey, Michael L- <br/><br/>
Teaching elementary school mathematics/ 
Michael L. Mahaffey and Alex F. Perrodin. 
 - Itasca, Ill.  Peacock  1973 
 - x, 357 p.:    illus.;   24 cm. 
<br/><br/>Bibliography: p. 316-345. 
<br/><br/><label>LCCN: </label>76-138646 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)