Understanding primary science : science knowledge for teaching 
Wenham, Martin. 
 - 3rd ed. 
 -  SAGE,  2010 
 - xvii, 277 p. 
<br/><br/>
<br/><br/><label>ISBN: </label>1-84860-118-2 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science -- Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>372.35044 W474 2010