Martin, David Jerner  <br/><br/>
Elementary science methods:  a constructivist approach/ 
David Jerner Martin. 
 - 5th ed. 
 - Australia:  Wadsworth, Cengage Learning,  c2009. 
 - 626 p.:  ill.;  24 cm. 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>978-0-495-50675-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching(Elementary).<br/>Constructivism (Education).<br/>Science--Study and teaching (Preschool).
<br/><br/><label>Dewey Class. No.: </label>GC 372.35044 M379 2009