Mathematics for elementary school teachers: the rational numbers. 

 - Washington, DC:  [1972]. 
 - vii, 446 p.:  illus.,  23 cm. 
<br/><br/> Written to accompany a series of 12 teacher training films with title: Elementary mathematics for teachers and students, and distributed in 1970. 
<br/><br/><label>LCCN: </label>72004769 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic---Foundations.<br/>Numbers, Rational-
<br/><br/><label>Dewey Class. No.: </label>510.7  / N277m