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Construct a simple battery that's able to power a small light or motor out of foil, salt water, and charcoal. A helpful video, produced by the Exploratorium, guides you along on this activity.

$1 - $5 per student Ages 8 - 18 10 to 30 minutes
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In this activity, learners surprisingly pop balloons without touching them using orange peels. This Mr.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes
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In this lab exercise, learners explore diffusion, cell membranes and particle size using beets and three alcohols.

$10 - $20 per group Ages 14 - 18 10 to 30 minutes
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In this chemistry lab activity, learners model the colors of fireworks by burning metallic solutions in a flame and observing the different colors produced.

$5 - $10 per group Ages 14 - adult Under 5 minutes
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In this activity, learners will discover what colors are in different markers, and may be surprised at the results.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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In this demonstration, learners explore the thermal properties of rubber. Learners investigate whether a rubber band contracts or expands when heated.

$1 - $5 per group Ages 14 - adult 10 to 30 minutes
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In this activity, learners explore how acids can dissolve eggshells leaving behind a membrane-covered bouncy egg.

1 cent - $1 per student Ages 6 - 14 1 to 7 days
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In this chemistry activity, learners explore the amount of copper in a new penny. Learners use toilet bowl cleaner to hollow out the interior of a penny with zinc inside.

$1 - $5 per student Ages 11 - 18 1 to 7 days
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This series of chemistry stations is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Each of the six stations features either a chemical or p

$10 - $20 per group Ages 11 - adult 45 to 60 minutes
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Learners mix vinegar and baking soda together in a bottle to create a chemical reaction. The reaction produces a gas, carbon dioxide, which inflates a balloon attached to the mouth of the bottle.

$1 - $5 per student Ages 6 - 14 Under 5 minutes
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In this activity, learners can create five-layer density columns by employing one of three (or all) methods.

$5 - $10 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners will experiment with density and chemical reactions to create a flurry activity.

$1 - $5 per student Ages 4 - 11 5 to 10 minutes
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In this activity (pages 3-4), learners investigate the properties of smart materials, which are materials that respond to things that happen around them.

$5 - $10 per student Ages 8 - adult 10 to 30 minutes
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In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this classic hands-on activity, learners estimate the length of a molecule by floating a fatty acid (oleic acid) on water.

$1 - $5 per student Ages 11 - 18 45 to 60 minutes
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In this activity related to plant biotechnology, learners transform a strain of E. coli using green fluorescent protein from a bioluminescent jellies.

Over $20 per group Ages 11 - adult 1 to 7 days
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This laboratory exercise is designed to show learners how DNA can easily be extracted from lima bean bacteria. This experiment requires the use of a centrifuge (not included in cost of materials).

$10 - $20 per group Ages 11 - 18 45 to 60 minutes
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In this activity exploring liquid dynamics, learners design and build a clay channel in a tray of water and then see what happens when food coloring and liquid soap are added to the mix.

$5 - $10 per group Ages 6 - 11 5 to 10 minutes
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This activity is about collecting and analyzing DNA as part of a criminal investigation.

1 cent - $1 per student Ages 8 - 18 10 to 30 minutes
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The "Rocket Reactions" activity is an exciting way to learn about how materials interact, behave, and change.

$5 - $10 per group Ages 6 - adult 5 to 10 minutes