Sound and light; interactive science 

 - New Jersey  Pearson  2011 
 - 156p. 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics<br/>Science study and teaching<br/>Physical science
<br/><br/><label>LC Class. No.: </label>QC 768.8  / .S68