Gattegno, Caleb <br/><br/>
Modern mathematics with numbers in colour / 
by C. Gattegno. 
 - Reading:   Educational Explorers,   1963.  
 - 83 p. ;  19 cm. 
 - Mathematics teaching series .
<br/><br/> A manual for primary school teachers 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>372.7044