Science for all children :  a guide to improving elementary science education in your school district / 
National Science Resources Center, National Academy of Sciences, Smithsonian Institution. 
 - Washington, D.C. :  National Academy Press,  1997. 
 - xiii, 225 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references (p. 193-195) and index. 
<br/><br/><label>ISBN: </label>0309052971 
<br/><br/><label>LCCN: </label>96033372 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary)--United States.<br/>Science--Study and teaching (Elementary)--United States--Case studies.<br/>Problem-based learning--United States.<br/>Problem-based learning--United States--Case studies.
<br/><br/><label>LC Class. No.: </label>LB 1585.3  / .S388 1997