Teaching Mathematics 5 to 9:  a classroom guide/ 
edited by Edith Biggs 
 - England:  Mcgraw Hill,  1983. 
 - viii,261p.:  ill.;  23 cm 
<br/><br/><label>ISBN: </label>070841381 
<br/><br/><label>LC Class. No.: </label>DUCE QA135.5 B485