Tipps, Steven. <br/><br/>
Guiding children's learning of mathematics / 
Steve Tipps, Art Johnson, Leonard M. Kennedy. 
 - 12th ed. 
 - Belmont, Calif. :  Wadsworth/Cengage Learning,  2011. 
 - xxii, 630 p. :  ill. ;  28 cm. 
<br/><br/>Includes bibliographical references (p. 611-618) and index. 
<br/><br/><label>ISBN: </label>9780495810971 (pbk.)  RM578.57 0495810975 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)--United States.