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The Power of Togetherness
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In this activity about human anatomy (page 16 of PDF), learners construct a model arm and discover how muscles and bones work together to achieve efficient movement.

Knowing North: Understanding the Relationship between Time and the Sun
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This activity shows how our experience of the Sun changes with time and location. The sun dagger at Chaco Canyon is thought by many to be a sort of ancient timekeeping device.

Woodpecker
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In this activity, learners construct a traditional handicraft toy that illustrates a motion commonly associated with violins and earthquakes.

Examining the Heart
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In this activity about the heart (on page 22 of the PDF), learners examine sheep or chicken hearts to learn about the heart's structure and the flow of blood through the heart.

I Can't Take the Pressure!
Learners develop an understanding of air pressure in two different activities.

What's Hiding in the Air?: Rubber Band Air Test
Learners build devices from rubber bands to test for invisible air pollutants.

Use Clues to Solve an Ice Mystery
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Learners explore the variables that affect the properties of ice and the places where different types of ice are found.

Sand Castle Saturation
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In this activity about saturation (page 1 of PDF under SciGirls Activity: Sand Dunes), learners will build a series of sand castle towers using a 16 oz cup.

Sawing Away
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In this outdoor activity, learners saw sections from fallen trees, then count tree rings and look closely at patterns of tree growth.

The Orange Game: Routing and Deadlock in Networks
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When a lot of people share one network (such as cars using roads, or messages getting through the Internet), there is the possibility that competing processes will create a “deadlock," or an interrupt

Logs to Soil
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In this outdoor activity, learners cut through and investigate rotten logs and then make log-profile puzzles for each other.

In Search of Pollen
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In this activity (on pages 9-14), learners dissect a real flower -- the kind of work botanists do.

Show Your Colors!
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In this family or group activity, learners conduct a chromatography experiment to reveal the colors that leaves "hide" under their green pigments.

Scram or Freeze
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In this outdoor activity and animal-role-play game, learners discover and uncover the hidden world of "cryptozoa"—organisms such as spiders, salamanders and slugs that live under objects, like rocks a

Great Steamboat Race
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In this outdoor activity, learners race small boats, made of cork, balsa wood, popsicle sticks etc., to investigate the rate and direction of currents in a stream or creek.

Design-a-Fish
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In this science and language arts activity, learners study fish anatomy and make their very own 3D paper fish.

Ice on Mars
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In this activity, learners use sand and ice cubes to create a model of permafrost and the effects of the ice melting through the surface.

Invent on the Spot
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In this activity, learners design a device to solve a problem: how to get a ball out of a drain pipe.

The Search for Secret Agents
Learners tour their school or home looking for sources of indoor air pollutants (IAPs).

Potion Commotion
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In this hands-on science experiment, students combine their understanding of the different states of matter and the characteristics of various chemical reactions.