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Making Rivers
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In this outdoor water activity, learners explore how to change the direction of water flow. Learners make puddles in dirt or use existing puddles and sticks to make water flow.

Wintergreen
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In this outdoor, winter activity, learners find living green plants under the snow and determine the light and temperature conditions around the plants.

Balls and Ramps
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In this activity, learners use simple, everyday materials to experiment with balls and ramps.

Seas in Motion
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In this outdoor, beach activity, learners use tennis balls, water balloons and other simple devices to investigate the movement of waves and currents off a sandy beach.
Making An Impact!
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In this activity (on page 14 of PDF), learners use a pan full of flour and some rocks to create a moonscape.

Super Soil
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In this outdoor activity, learners make their own organic-rich soil. Depending on where this activity is done, learners will probably discover that their local soil is low in organic matter.

Cool It
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In this outdoor activity/game, learners use thermometers to simulate how lizards survive in habitats with extreme temperatures.
Magnus Glider
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A design challenge that takes paper airplanes into an entirely different direction: a magnus glider uses cups and and rubber bands to create a glider that uses the same forces that a curveball (from b
Glowing Tonic
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In this sunny day activity, learners compare how a cup of water and a cup of tonic water reflect or refract light in the sun.

Why Are Bubbles So Colorful?
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In this activity, learners explore why they can see colors in bubbles and why they change.

COSI's Bubble Recipe
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Everybody loves bubbles, and this is the best bubble recipe ever!

Playground Patterns of Cracks
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In this math activity, learners observe and sketch cracking patterns in pavement.

Bike Bling
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In this activity, learners will trick out their bike with crafts and flair. Learners will explore symmetry, cause and effect and design through this activity.

As the Rotor Turns: Wind Power and You
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In this engineering activity, learners will get acquainted with the basics of wind energy and power production by fabricating and testing various blade designs for table-top windmills constructed from

Boomerang
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Learners trace, cut out and fly a boomerang, outdoors or in a large indoor space.

Thrown For A Curve: Pitch Like A Big Leaguer
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You may have tried to throw a curveball or a slider, or even a screwball, with an ordinary baseball and found it difficult to do.

Pringles Pinhole Camera
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An ordinary camera has a lens that makes an image on film. In a pinhole camera, a small hole replaces the lens.

Observing the Moon
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Use this Moon Map Guide to help learners identify features on the Moon, while looking through a telescope.

Control a Bird’s Flight
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In this engineering design challenge, learners make a bird and then control its flight with attached strings.

Where Does the Wind Blow?
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In this activity, learners investigate wind by comparing the force of wind in different locations. Learners build wind-o-meters out of wooden sticks and strips of paper.