Primary Mathematics: A Development Through Activity 

 - Chicago:  Heinemann Educational,  1985. 
 - 77p.;  col.ill  30cm 
<br/><br/><label>ISBN: </label>978 0 435 02809 1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Primary Mathematics<br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>372.7  / SCO