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What's So Special about Water: Absorption
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In this activity about water's cohesive and adhesive properties and why water molecules are attracted to each other, learners test if objects repel or absorb water.

Tabletop Biosphere
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In this activity, learners create a sealed, mini ecosystem that supplies freshwater shrimp with food, oxygen, and waste processing for at least three months.

Vanishing Craters
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In this activity (on pages 12-15), learners make a crater model and test the effects of weather (rain) on its surface.

Piecing It All Together
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Learners create their own piece of history by decorating, shattering, and piecing together a flowerpot "artifact".

Spectroscope
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In this activity (posted on March 12, 2011), learners follow the steps to construct a spectroscope, a tool used to analyze light and color.
Pepper Scatter
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In this activity, learners explore the forces at work in water. Learners experiment to find out what happens to pepper in water when they touch it with bar soap and liquid detergent.

Rubber Blubber Gloves
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In this experiment, learners work in pairs to create two gloves -- one that contains a layer of shortening (blubber) inside, and one that doesn't.

Jiggly Jupiter
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In this activity, learners build edible models of Jupiter and Earth to compare their sizes and illustrate the planets' internal layers.

Make Your Own Compass
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In this physics activity (page 8 of the PDF), learners will make their very own working compass.

All Tangled Up
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In this activity on page 60, learners examine and simulate wildlife entanglement by experiencing what it might be like to be a marine animal trapped in debris.

3-2-1 POP!
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In this physics activity, learners build their own rockets out of film canisters and construction paper.

Future Moon: The Footsteps of Explorers
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In this activity, learners drop impactors onto layers of graham crackers!

Infant Moon: Moon Mix!
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In this activity, learners investigate the Moon's infancy and model how an ocean of molten rock (magma) helped shape the Moon that we see today.

Washing Air
Learners observe and discuss a simple model of a wet scrubber, a device for cleaning industrial air pollution.

Foam Tower
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In this activity (page 1 of the PDF under SciGirls Activity: Water Slides), learners will whip up some suds with a cup of water and a tablespoon of dish soap until the bubbles are stiff enough to star

Recipe for a Moon
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In this activity, learners discover that the Moon, like Earth, is made up of layers of different materials. Learners work in teams to make models of the interiors of the Moon and Earth.

Let's Make a Supernova!
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This fun and simple hands-on astronomy activity lets learners explore what happens when a star explodes.

Crystal Gardens
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In this activity, which requires adult supervision, learners get to explore the awesome power of chemistry.

Gravestone Weathering
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In this activity (located on pages 9-14 of PDF), learners visit a cemetery to examine the distinguishing characteristics of rock weathering.

Exploring the Solar System: Asteroid Mining
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In this activity, learners will imagine the challenges and opportunities of asteroid mining.