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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.

In this activity, learners take measurements and create charts to learn about the size of dinosaurs and their relative scale to humans.

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

This is an activity about turbidity, or the amount of sediment suspended in water.