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Stereoscope
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In this activity, learners construct a device that allows them to view 2-D images in 3-D.
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.
Thaumatrope
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In this activity, learners make an optical illusion toy from the 1800s to explore persistence of vision.