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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.
Our Sense of Sight: Color Vision
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In this activity, learners investigate color vision as well as plan and conduct their own experiments.
Vanishing Rods
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This is a quick activity/demonstration that introduces learners to the concept of index of refraction. Learners place stirring rods in a jar of water and notice they can see them clearly.
Experiencing Parallax With Your Thumb
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In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.
Our Sense of Sight: Eye Anatomy and Function
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In this activity, learners investigate the sense of sight and develop and conduct their own experiments.
Vestibular-Ocular Reflex
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In this activity, learners will perform various investigations to understand the vestibular-ocular reflex and learn about the importance of visual cues in maintaining balance.
Our Sense of Sight: How We Perceive Movement, Depth and Illusions
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In this activity, learners investigate visual perception as well as plan and conduct their own experiments.
Sliding Gray Step
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How can you make one shade of gray look like two? By putting it against two different color backgrounds! This activity allows learners to perform this sleight of hand very easily.
Benham's Disk
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In this activity, learners make a Benham Top to explore visual illusions and optics.
Ready to Observe: Enhance Your Telescope Experience
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This fun hands-on astronomy activity uses a variety of simple props to help learners understand why they see what they see in a telescope.