Martin, David Jerner <br/><br/>
Elementary science methods :  a constructivist approach / 
David Jerner Martin. 
 - 3rd ed. 
 - Belmont:   Thomson/Wadsworth,   2003.  
 - xix, 553 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0534556493 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary)--United States<br/>Constructivism (Education)--United States
<br/><br/><label>Dewey Class. No.: </label>372.35