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Rotating Light
Source Institutions
In this activity, learners explore what happens when polarized white light passes through a sugar solution.
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Fan Cart
Source Institutions
If a sailboat is stranded because there is no wind, is it possible to set up a fan on deck and blow wind into the sail to make the boat move?
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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.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-705.jpg?itok=fv6LJJbI)
Soap-Film Painting
Source Institutions
Make a big canvas of iridescent color with pvc pipe! In this Exploratorium Science Snack, you'll need to cut and assemble some PVC pipe, but the pay-off, the soap-bubble canvas, is big.
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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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Cool Hot Rod
Source Institutions
If you have access to a copper metal tube, this activity does a great job demonstrating what happens to matter when it's heated or cooled. This activity requires some lab equipment.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-744.gif?itok=PyQidntq)
Hot Spot
Source Institutions
In this activity, learners explore the invisible infrared radiation from an electric heater.
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Far-Out Corners
Source Institutions
Are there boxes, is this an illusion, or is this real life Q-bert? Illusions are always fun to build especially when you can build them.
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Look Into Infinity
Source Institutions
Learners use two mirrors to explore how images of images of images can repeat forever.
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Falling Feather
Source Institutions
In this physics activity, learners recreate Galileo's famous experiment, in which he dropped a heavy weight and a light weight from the top of the Leaning Tower of Pisa to show that both weights fall
![](/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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Stripped-down Motor
Source Institutions
In this activity, you'll make an electric motor--a simple version of the electric motors found in toys, tools, and appliances everywhere.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-212.jpg?itok=Kud6FGrr)
Bee Hummer
Source Institutions
In this activity, learners investigate sound and vibration by making a "bee hummer"--a toy that sounds like a swarm of buzzing bees when you spin it around.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-840.gif?itok=3OcQsasE)
Motor Effect
Source Institutions
In this activity about electricity and magnetism, learners examine what happens when a magnet exerts a force on a current-carrying wire.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-570.gif?itok=0bFvmKdA)
Glow Up
Source Institutions
In this activity, learners explore chemiluminescence and fluorescence. Learners examine 3 different solutions in regular light, in the dark with added bleach solution, and under a black light.
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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.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-673.jpg?itok=u5IzswvR)
Convection Current
Source Institutions
In this activity, learners make their own heat waves in an aquarium.
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Self-Portrait Silhouettes: Activity 2
Source Institutions
In this activity, learners make a photographic image—without a camera!
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Coupled Resonant Pendulums
Source Institutions
In this activity, learners discover that two pendulums suspended from a common support will swing back and forth in intriguing patterns, if the support allows the motion of one pendulum to influence t