Kirkby, David. <br/><br/>
Developing numeracy :  differentiated activities for mixed ability classes / 
by David Kirkby. 
 - England :  Folens,  1999. 
 - 6 v. :  ill ;  28 cm. 
 - Folens developing numeracy .
 - Folens developing numeracy .
<br/><br/><label>ISBN: </label>1862025819 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Elementary education in spesific subjects--Mathematics.