Bennett, Albert B Jr. <br/><br/>
Mathematics :  an activity approach / 
Albert B. Bennett, Jr., Leonard T. Nelson. 
 - 2nd ed. 
 - Dubuque, IA :  WM C. Brown,  c1988. 
 - xi, 279 p. : ill. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--1961