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See Inside How Things Work
Discover the Quicklinks for this book
연령: 6+
Find out more about how gadgets and gizmos work and how they were invented with links to websites where you can:
- Watch a video about the invention of the light bulb.
- See how ramps, levers and other simple machines work.
- Meet a crane operator and see some enormous cranes.
Scroll down to see all the links
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