Ways to think about mathematics :  activities and investigations for grade 6-12 teachers / 
Steve Benson with Susan Addington ... [et al.] 
 - Thousand Oaks, Calif. :  Corwin Press,  2005 
 - xviii, 242 p. :  ill. ;  29 cm. 
<br/><br/><label>ISBN: </label>076193104X (cloth)  RM323.40 0761931058 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)--Activity programs<br/>Mathematics--Study and teaching (Secondary)--Activity programs