Posamentier, A S <br/><br/>
101 great ideas for introducing key concepts in mathematics : a resource for secondary school teachers 

 - California  Corwin Press  2001 
 - 225 
<br/><br/><label>ISBN: </label>0-7619-7513-6 
<br/><br/><label>Dewey Class. No.: </label>510.712 P8