The natural investigator :  a constructivist approach to teaching elementary and middle school science / 
Michael Bentley ; Christine Ebert ; Edward S. Ebert. 
 - Usa:   Wodsworth,   [2000].  
 - 351p. ;  24cm. 
<br/><br/> Inludes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0534129129 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Elementary education<br/>Teaching science<br/>Εκπαίδευση
<br/><br/><label>Dewey Class. No.: </label>372.3