Biggs, Edith Ethel. <br/><br/>
Teaching mathematics 7-13 :  slow learning and able pupils / 
edith Biggs. 
 - Windsor :  NFER-Nelson,  1985. 
<br/><br/><label>ISBN: </label>0700506616 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics -- Study and teaching.--Mathematics -- Study and teaching.