How does a bar code reader work? Where does an airport use X-rays? What is a travelator? Technology at Work looks at the machines and tools that make things work in our daily lives. From tiny... This description may be from another edition of this product.
Format:Library Binding
Language:English
ISBN:1410931757
ISBN13:9781410931757
Release Date:October 2008
Publisher:Raintree
Length:32 Pages
Weight:0.90 lbs.
Dimensions:0.4" x 7.7" x 10.4"
Age Range:8 to 10 years
Grade Range:Grades 3 to 5
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