Beginning investigations and small changes in my classroom. 

 - Berks :  W. Foulsham & Co. Limited,  1988. 
 - 80 p. : ;  23 cm. 
<br/><br/><label>ISBN: </label>0572015119 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and Teaching.