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CD Spinner
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In this activity, learners create a simple “top” from a CD, marble and bottle cap, and use it as a spinning platform for a variety of illusion-generating patterns.
Kaleidoscope
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In this activity, learners build inexpensive kaleidoscopes using transparency paper and foil (instead of mirrors).
Periscope
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In this activity, learners construct a device that allows them to look over ledges or around corners.
Phenakistascope
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In this optics activity, learners build an animation tool to make mini movies. When you spin a phenakistascope, the pictures move so quickly that your eyes and brain can't separate the images.
Benham's Disk
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In this activity, learners make a Benham Top to explore visual illusions and optics.
Periscope
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In this optics activity, learners build a spy tool to secretly view things over walls or around corners.