Sobey, Edwin J. C.,  1948- <br/><br/>
Young inventors at work! :  learning science by doing science / 
Ed Sobey. 
 - Glenview, IL :  Good Year,  c1999. 
 - 120 p. :  ill. ;  28 cm. 
<br/><br/> "Grades 4-8." 
<br/><br/> Challenges kids to use problem solving and critical thinking to design, build, and test model structures, games, and vehicles. 
<br/><br/><label>ISBN: </label>067357735X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inventions--Juvenile literature.<br/>Children as inventors--Juvenile literature.