Escalators
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Book Overview
An escalator is a moving staircase with steps that go up or down. This book discusses how an escalator if based off a conveyor system, moving objects up and down using gears and chains that are... This description may be from another edition of this product.
Format:Paperback
Language:English
ISBN:1627177698
ISBN13:9781627177696
Release Date:August 2014
Publisher:Rourke Educational Media
Length:24 Pages
Weight:0.20 lbs.
Dimensions:0.1" x 8.0" x 8.0"
Age Range:5 to 8 years
Grade Range:Preschool to Grade 3
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