Piltz, Albert. <br/><br/>
Creative teaching of science in the elementary school / 
[by] Albert Piltz [and] Robert Sund ; foreword by E. Paul Torrance. 
 - Boston :  Allyn & Bacon,  [1970] 
 - Allyn and Bacon series in creative teaching .
<br/><br/> First published in 1968. 
<br/><br/>Bibliography: p. 187-190. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science -- Study and teaching (Elementary)--Science -- Study and teaching (Elementary)<br/>Learning by discovery.