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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.
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Spherical Reflections
Source Institutions
In this art meets science activity, learners pack silver, ball-shaped ornaments in a single layer in a box to create an array of spherical reflectors.
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Pupil
Source Institutions
In this activity, learners explore their eye pupils and how they change.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-450.jpg?itok=V5Kc_BeL)
Bubble Tray
Source Institutions
In this activity, learners use simple materials to create giant bubbles.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-452.jpg?itok=IpaQ560a)
Cylindrical Mirror
Source Institutions
In this activity, learners create a cylindrical mirror to see themselves as others see them.
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Water Sphere Lens
Source Institutions
In this activity about light and refraction, learners make a lens and magnifying glass by filling a bowl with water.
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Magic Wand
Source Institutions
In this activity about light and perception, learners create pictures in thin air.
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Hot Spot
Source Institutions
In this activity, learners explore the invisible infrared radiation from an electric heater.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-498.jpg?itok=XfwT9bP_)
Critical Angle
Source Institutions
In this optics activity, learners examine how a transparent material such as glass or water can actually reflect light better than any mirror.
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Soap-Film Interference Model: Get on our wavelength!
Source Institutions
By making models of light waves with paper, learners can understand why different colors appear in bubbles.
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Glowing Pickle
Source Institutions
In this activity, high voltage is applied across a pickle to emit a yellow glow. This activity should only be conducted by skilled adults and is best suited as a demonstration.
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Up Periscope!
Source Institutions
This activity provides instructions for building a mirrored tube--a smaller and simpler version of a submarine's periscope--that lets you see around corners and over walls.
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Corner Reflector
Source Institutions
In this optics/mathematics activity, learners use two hinged mirrors to create a kaleidoscope that shows multiple images of an object.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-841.jpg?itok=gl8lBbgk)
Bird in the Cage
Source Institutions
In this activity about afterimages, learners explore what happens when receptor cells called cones in your eye's retina get tired.
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Convection Current
Source Institutions
In this activity, learners make their own heat waves in an aquarium.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-760.jpg?itok=Wdp75uRe)
Disappearing Glass Rods
Source Institutions
In this optics activity, learners discover how they can make glass objects "disappear." Learners submerge glass objects like stirring rods into a beaker of Wesson™ oil to explore how the principles of
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Three Circles of Pigments
Source Institutions
In this activity, learners overlap the three primary colors to see how all other colors are made.
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Experimenting with Symmetry
Source Institutions
In this activity, learners use pattern blocks and mirrors to explore symmetry. Learners work in pairs and build mirror images of each other's designs.
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Anti-Gravity Mirror
Source Institutions
In this demonstration, amaze learners by performing simple tricks using mirrors. These tricks take advantage of how a mirror can reflect your right side so it appears to be your left side.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-765.jpg?itok=lK1KtGXi)
Afterimage
Source Institutions
In this activity about light and perception, learners discover how a flash of light can create a lingering image called an "afterimage" on the retina of the eye.