Resler, Tamara J., <br/><br/>
Inside out! :  discover secrets and science behind trick candles, 3-D printers, penguin propulsion, and everything in between / 
At head of title:  How things work 
T.J. Resler. 
 - 208 pages :  color illustrations ;  31 cm. 
 - How things work .
<br/><br/> Cover title.  Includes index. 
<br/><br/> Ages 7-10.  Grades 4 to 6. 
<br/><br/><label>ISBN: </label>9781426328770  9781426328787  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technology--Miscellanea--Juvenile literature.<br/>Inventions--Miscellanea--Juvenile literature.
<br/><br/><label>Dewey Class. No.: </label>600 RESL