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In this activity, learners explore how two cylinders that look the same may roll down a ramp at different rates.

In this activity, learners create a large film of soap and experiment with what can and cannot pass through it.

In this optics activity, learners explore why the sky is blue and the sunset is red, using a simple setup comprising a transparent plastic box, water, and powdered milk.

In this optics activity, learners discover that when they rotate a special black and white pattern called a Benham's Disk, it produces the illusion of colored rings.