Activity
PBS

Pbs Teachers: Secrets of Lost Empires Ii: Lever Lift

For Teachers 3rd - 8th
Examine the classes of levers and discover how levers work by raising a brick with shish kebab skewers.
Graphic
Curated OER

Science Kids: Science Images: Gears

For Students 9th - 10th
This image shows a large gear and a small gear from two different angles. Understanding how gears work is important when learning about mechanical advantage and simple machines.

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