Bell, Stephen. <br/><br/>
"Hole numbers" and other practical investigations :  a resource book for mathematics teachers / 
Stephen Bell, Peter Brown and Steven Buckley. 
 - Cambridge ;  New York, NY USA :  Cambridge University Press,  1992. 
 - xv, 97 p. :  ill. ;  30 cm. 
<br/><br/><label>ISBN: </label>0521406455 (pbk) :  £17.95 
<br/><br/><label>LCCN: </label>93161763  
<br/><br/><label>Nat. Bib. No.: </label>GB91-8916 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>QA248  / .B41 1992 
<br/><br/><label>Dewey Class. No.: </label>372.7/044