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In this activity, learners explore how nanosized structures can create brilliant color.

In this activity, learners use their imaginations and picture a scene in their heads.

In this optics activity, learners explore color by examining color dots through colored water and the light of a flashlight.

In this optics/mathematics activity, learners use two hinged mirrors to create a kaleidoscope that shows multiple images of an object.

In this activity, learners will create an optical illusion top. Learners will explore color mixing, physics and design through this activity.

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

In this optics activity, learners build a spy tool to secretly view things over walls or around corners.