Numbers and the number system. 3. teacher's handbook 
general editors Sandy Cowling ... [et al.] 
 - Cambridge  Cambridge University Press  2000 
 - 111 p. : ill. ; 30 cm 
<br/><br/><label>ISBN: </label>521784557 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Methods of instructions and study
<br/><br/><label>Dewey Class. No.: </label>371.3028 COW