Castle Under Siege!: Simple Machines

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Heinemann-Raintree Library, 2005 - Juvenile Nonfiction - 32 pages
Introduces simple machinery devices and explains how they were used in the Middle Ages to build and defend castles. Diagrams illustrate how wedges, a drawbridge, screw, catapult, crowbar and pulley work. Suggested level: primary, intermediate.
 

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Andrew Solway is a Heinemann-Raintree author.

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