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In this activity, learners make their own pinhole viewer in order to measure the size of the sun.

In this activity, learners create a map of a hidden surface using a "sounding stick" -- a technique similar to how underwater maps were once made.

Yes, you can weigh your car by figuring out your wheel's tire pressure combined with the "tire's footprint." You'll need someone with a car, driver's license, and safety in mind.

In this activity, learners play a card game that explores different size scales--macro, micro and nano.