Classroom » Multimedia

Gears

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Date created

January 13, 2007

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This photograph copyright ©2007. Terms of use

See this photograph in context

• Forces, Motion, and Simple Machines: Investigate forces and motion in technological designs, including friction, forces, inertia, simple machines, and gravity.

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Learn more

• Search LEARN NC for gears and simple machines.

In the classroom

• See our collection of articles on visual literacy for ideas on using photographs meaningfully in the classroom.

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This photograph shows three gears that work together as a simple machine to open a garage door. A chain is looped over the bottom gear and goes down to another gear that is not visible in the picture.