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In this quick activity/demonstration about density, learners examine what happens when two cans of root beer--one diet and one regular--are placed in a large container of water.

In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners.

In this quick activity/demonstration (5th on the page), learners explore depth perception.

This hands-on activity demonstrates how a material can act differently when it's nanometer-sized.

Sound changes pitch relative to how you or the source of the sound is moving. Use this simple activity developed by the Exploratorium to experience the Doppler Effect yourself!

Walk a toy to the edge of its doom, maybe it'll fall off the edge of a table, but it will safely stop right before falling.