Clausen-May, Tandi. <br/><br/>
Teaching mathematics visually and actively / 
Tandi Clausen-May. 
 - 2nd ed. 
 - Thousand Oaks, CA :  SAGE Publications,  2013. 
 - p. cm. 
<br/><br/><label>ISBN: </label>9781446240854 (hardback : alk. paper) 9781446240861 (pbk. : alk. paper) 
<br/><br/><label>LCCN: </label>2012955612