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In this activity, learners discuss and investigate how cameras, telescopes, and their own eyes use light in similar ways.

In this pencil and paper activity, learners work in pairs and simulate how astronomical spacecraft and computers create images of objects in space.

In this activity (posted on March 27, 2011), learners follow the steps to construct a mini zoetrope, a device that produces an illusion of action from a rapid succession of static pictures.

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

In this activity, learners set up an experiment to investigate the effects of hot air on the path of a laser beam.