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The Nose Knows!
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In this activity on page 9 of the PDF, learners test how flavoring extracts move through the walls of a balloon.

Inverse Square Law
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In this math activity related to light, learners explore why a light, such as a candle or a streetlight, looks dimmer the farther away from it we get.

Rainbow Refraction
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In this activity, learners will explore how light can refract or break apart into different colors.

Disappearing Act
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Make a camouflage cut-out animal! Using patterned paper or magazine pictures from around the house, use your craft skills to make a paper animal that blends into its background.

Your Blind Spot
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In this activity, learners will explore how their own eyes work by experimenting with their photoreceptors.

String Thing
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String Thing is an interactive online game in which learners change a virtual string's tension, length, and gauge to create different musical pitches.
Why is the Sky Blue?
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In this activity, learners create a "mini sky" in a glass of water in a dark room.

Make Your Own Sea Otter
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In this activity about sea otters, learners make their own "otter whiskers" and use them to find objects underwater.

Metal Noise Maker
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In this activity, learners explore how sound travels through solid objects better than through air. Leaners attach a metal clothes hanger to a piece of string and hold it to their ears.

Polarized Sunglasses
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In this activity, learners explore how polarizing sunglasses can help diminish road glare.

Does Your Chewing Gum Lose Its Flavor?
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Each learner chews a piece of gum until it loses its flavor, and then leaves the gum to dry for several days.

Writing for Night Vision
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In this activity (page 1 of the PDF under SciGirls Activity: Forensics), learners will use a home video camera with a “night vision” mode to test how various inks appear outside the spectrum of visibl

Read With Your Fingers
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In this activity, learners work in partners to create and exchange messages written in Braille. Learners use a Braille key and thumbtacks to write their messages in Braille.

Doppler Effect
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Sound changes pitch relative to how you or the source of the sound is moving. Use this simple activity developed by the Exploratorium to experience the Doppler Effect yourself!

Sound Off!
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This activity includes several games about animal sounds. Using their sense of hearing and communicating with various kinds of noisemakers, learners role-play predator and prey.

Sock It To Me
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In this activity, learners discover how sweating makes us feel cooler. Learners put on one damp sock and one dry sock and sit in front of a fan.

Spin Art
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Make your own spin art device using an old record player! Notice patterns and effects the spinning movement has on your work. When finished, post your work to the Spin Art Gallery!

Laser Jello
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In this activity, learners use gelatin as a lens to investigate the properties of laser light.

Spinning Cylinder: Make a triangle appear on a spinning wheel
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Spin a short piece of PVC pipe that's been marked up, and watch a triangle appear. Enjoy this optical illusion from the Exploratorium's Science Snack series.

Make a Green Gumball Black
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In this optics activity, learners use a shoebox, colored cellophane and sunlight to "change" the colors of gumballs. Learners will be surprised when the green and blue gumballs appear black!