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Earth Atmosphere Composition
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In this activity, learners use rice grains to model the composition of the atmosphere of the Earth today and in 1880. Learners assemble the model while measuring percentages.

Atmosphere Composition Model
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In this activity, learners create a model using metric measuring tapes and atmosphere composition data.

Special Effects: Titanic and Beyond
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In this activity, learners investigate how geometry plays a role in perspective.

Test the Finger Wrinkle Hypothesis
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Learners create a tool to measure how well they grip a wet object when their fingers are smooth versus wrinkly. Are smooth or wrinkly fingers better at holding on to the object?

What's in the Water
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"What's in the Water" lets participants use tools to solve the mystery- what chemicals and compounds are in a sample of water?

The Pull of the Planets
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In this activity, learners model the gravitational fields of planets on a flexible surface.

Extreme Sounds
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This activity (on page 2 of the PDF under SciGirls Activity: Extreme Sounds) is a full inquiry investigation into sound.

Make a Prism
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In this activity, learners will make their own prism and use a glass of water to separate sunlight into different colors.

Ripening of Fruits and Vegetables
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In this activity, learners test the rate of ripening fruit and vegetables and use a chemical to inhibit the ripening process.

Bend a Carrot
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In this activity, learners investigate the process of osmosis by adding salt to a sealed bag of raw carrots and comparing it to a control.

Bubble Trouble
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In this activity on page 15 of the PDF, learners measure the amount of bubbles that they make using a detergent.

Going Green
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In this activity, learners conduct a waste audit and use their findings to implement a plan for reducing trash.

Push It Out
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In this physics related activity which requires adult supervision, learners make their own powerful water rocket and, with it, explore Newton's Third Law of Motion.

Greeting Card Boxes
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In this activity, learners make cool boxes out of old (or new) greeting cards or postcards.

Slowing the Flow
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In this experiment, pairs of learners explore how cold water affects circulation. The mammalian diving reflex (MDR) slows circulation when the body is exposed to cold water.

Kimchee Fermentation Chamber
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Learners make kimchee or sauerkraut, which is really just fermented cabbage, in a 2-liter plastic bottle.

Bubbles: Using Controls
In this experiment, learners use JOY liquid detergent and glycerin to make the largest bubble they can that lasts 15 seconds.

Conservation of Mass
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This activity was designed for blind learners, but all types of learners can participate to learn about conservation of gas. This is one of the classic experiments using baking soda and vinegar.

Exploring Size: Scented Solutions
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This is an activity in which learners will find that they can detect differences in concentration better with their nose (smelling) than with their eyes (seeing).

Can You "See" Thermal Radiation?
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Use this hands-on activity to demonstrate infrared and thermal radiation.