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Learners make a simple battery out of "sandwiches" of aluminum foil, pennies, and a salt water-soaked paper towel.

$1 - $5 per group Ages 8 - 14 5 to 10 minutes
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Play-Doh is conductive! Use the semiconductive qualities of Play-Doh to make your own squeezable instrument. Pico Cricket is required.

Over $20 per group Ages 6 - adult 45 to 60 minutes
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Learners use a simple process to extract DNA from strawberries.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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Learners observe a sealed container holding a clear colorless liquid. They shake the container and the fluid turns blue. When allowed to sit for a few moments, the fluid turns colorless again.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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Learners observe an electrochemical cell constructed from a small jar containing zinc and copper strips immersed in separate solutions. The strips are connected to a motor that turns a small fan.

$5 - $10 per group Ages 11 - adult 10 to 30 minutes
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This activity explores the basic workings of a siphon, which is the core technology that makes toilets work.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners explore the history, design and motion of spinning tops. Learners work in teams of "engineers" to design and build their own tops out of everyday items.

$10 - $20 per group Ages 8 - 18 1 to 2 hours
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In this project, students explore how levers work, by making a puppet with moving limbs.

1 cent - $1 per student Ages 6 - 11 30 to 45 minutes
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This activity models the necessary balance of creating power and cleaning up its associated waste. Learners participate in a game where they attempt to move forward toward a goal.

$1 - $5 per group Ages 8 - 11 10 to 30 minutes
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This activity uses LEGO® bricks to represent atoms bonding into molecules and crystals. The lesson plan is for a 2.5 hour workshop (or four 45-minute classes).

Over $20 per group Ages 11 - adult 2 to 4 hours
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In this activity, learners test to see if carbon dioxide is present in the air we breathe in and out by using a detector made from red cabbage.

Over $20 per group Ages 8 - adult 10 to 30 minutes
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In this electrochemistry activity, young learners and adult helpers create a battery from a potato to run a clock.

$5 - $10 per student Ages 4 - 8 10 to 30 minutes
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In this activity, you'll make an electric motor--a simple version of the electric motors found in toys, tools, and appliances everywhere.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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This activity (page 2 of the PDF under SciGirls Activity: Microgravity) is a full inquiry investigation into how ordinary things behave in microgravity, similar to what astronauts experience.

Over $20 per group Ages 8 - 14 2 to 4 hours
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In this activity, learners use ABS pipe and an air leaf blower to make a strong shooting machine.

Over $20 per group Ages 11 - adult 1 to 2 hours
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In this activity, learners discover that one way to cool an object in the presence of a heat source is to increase the distance from it or change the angle at which it is faced.

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners perform 20 arm curls with cans that simulate the weight of beans on Earth versus the weights of the same number of beans on the Moon and in space.

$5 - $10 per group Ages 8 - 14 10 to 30 minutes
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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.

$5 - $10 per student Ages 8 - 11 10 to 30 minutes
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In this space science activity, learners work together to create a human-powered orrery to model the movements of the four inner planets.

$5 - $10 per group Ages 11 - 14 10 to 30 minutes
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In this activity related to rotational inertia (page 1 of the PDF under SciGirls Activity: Microgravity), learners will use a bit of scientific experimenting to test if open-faced peanut butter sandwi

$1 - $5 per group Ages 8 - 14 10 to 30 minutes