Pirie, Susan. <br/><br/>
Mathematical investigations in your classroom :  a guide for teachers / 
by Susan Pirie. 
 - London :  Macmillan,  1988. 
 - 80 p. 
<br/><br/><label>ISBN: </label>0333446283 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching.