Geometry:
Circles

Animal Traces

Tracing these unusual animals will teach students about speed, polygons, and circles.

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The Antigravity Machine

Ask students what they think an "antigravity machine" would do ("something that helps you work against gravity"). Tell them that you are going to show them an antigravity machine for the day’s activity.

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Circle Folding

It's amazing what you can make out of a simple circle--and what you can learn from it.

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Cookies

The best circular cookie sheet to use for baking cookies depends on the diameters of each.

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Mission to the Moon

For the orbital motion of the moon, we use the fact that the moon completes one orbit (360°) every 655 hours to set up the proportion h/655 = n/360, where h = the number of hours that have passed and n = the number of degrees that the moon has moved in its orbit.

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Rolling Cans

Students discover for themselves the relationship between the diameter and the circumference of a circle.

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Variables and Equations

Students get hands-on experience with variables and equations.

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Which Pizza?

Is half of a medium pizza more than all of a small one?

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