Teaching science in the elementary grades : volume 1: chemistry and biology 
Purita P. Bilbao...[et.al]. 
 -  Lorimar Publishing, Inc.,  2019 
 - xxiv, 226pages 
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<br/><br/><label>ISBN: </label>978-6-218-03564-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science -- study and teaching.
<br/><br/><label>Dewey Class. No.: </label>F 372.35044 T2834 2019