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CD Spinner
Source Institutions
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.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-576.jpg?itok=luTIccbZ)
Drugs, Risks and the Nervous System
Source Institutions
In this activity, learners estimate risks associated with different events and compare their estimates to the real possibilities.
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How Our Environment Affects Color Vision
Source Institutions
In this lab (Activity #1 on page), learners explore how we see color.
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Moiré Patterns
Source Institutions
In this activity about light and perception, learners create and observe moire patterns.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-532.png?itok=LtNA0zyD)
Tiny Pants Photo Challenge
Source Institutions
In this activity, learners use a simple trick of perspective to dress friends in tiny cutout clothing. Learners make tiny pants out of card stock and tape them to the end of a stick.