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Carbon Configurations
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In this activity, learners use geometry to predict the shape of carbon. Learners twist and attach chenille stem pieces that represent bonds between different carbon atoms.

Cool It!
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In this fun hands-on activity, learners use simple materials to investigate evaporation. How can the evaporation of water on a hot day be used to cool an object? Find out the experimental way!

Finding the Size of the Sun and Moon
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In this activity, learners build a simple pinhole viewer. They use this apparatus to project images from a variety of light sources, including a candle, the Sun, and the Moon.

The Great Toss Off!
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In this math game, learners toss plastic cups to land just right and collect points to win.

Twirling Rope Frequency
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In this activity (page 1 of the PDF under SciGirls Activity: Double Dutch), learners will stand twelve feet apart swinging a rope at the slowest tempo possible while someone uses a stopwatch to record

Cable Car
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In this activity, learners string a line across the room and build cable cars that can move from on end to the other.
Triboluminescence
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In this activity, learners discover what happens when they crush wintergreen-flavored candies in a very dark room.

Bouncing Yo-Yo
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In this activity, learners build unique yo-yos, which spin round and round without moving up and down.

Veggies with Vigor
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In this activity, learners try to revive wilted celery. Learners discover that plants wilt when their cells lose water through evaporation. Use this activity to introduce capillary action.

Breaking Up with Combustion
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This activity teaches combustion as the interaction of a fuel source and oxygen.

X-Ray Spectra
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In this activity, learners use simple materials to simulate the effect of X-rays in a safe way. Learners place a piece of window screen over a box and a cardboard pattern on top of the screen.

Maritime Munchies
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In this activity, learners follow simple historical maritime recipes to cook up hardtack and swanky, and then compare the foods they eat to what was served on ships in the past.

Avi's Sensational Salt Dough
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In this activity on page 5 of the PDF, learners mimic the process for making bricks. Learners shape and bake creations from a dough that is made from flour, salt, and water.
River Catcher
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In this activity (located at the top of the page), learners make an easy river strainer and see what they can catch.

Using Solar Energy
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In this activity, learners discover how solar energy can be used to heat water.

Three Little Pigs Construction Company
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In this activity about problem-solving, learners build a house for the Three Little Pigs using twenty straws and two index cards.

Geothermal Power Plant Model
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In this activity, learners make a model of a power plant that uses steam. Learners use simple materials like foil, a tin can, and a pot of water to model a geothermal power plant.

Sniffing for a Billionth
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This is an activity (located on page 4 of the PDF under What's Nano? Activity) about size and scale.

Hanging Around
Learners investigate weight by building a spring scale. They observe and record how it responds to objects with different masses.

What Counts in Bounce
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In this activity learners compare the bounciness of warm and cold racquetballs to see if temperature makes a difference in how well they bounce.