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In this demonstration, learners compare and contrast regular water ice to dry ice (frozen carbon dioxide). Both samples are placed in a solution of acid-base indicator.

$1 - $5 per group Ages 8 - 14 5 to 10 minutes
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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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Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity about weights and balances, learners create their own balance using paper cups. Then, learners explore how to compare the relative mass of objects.

1 cent - $1 per student Ages 8 - 11 10 to 30 minutes
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In this activity, learners explore Boyle's Law and discover that water will boil at room temperature if its pressure is lowered.

1 cent - $1 per student Ages 11 - 18 10 to 30 minutes
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In this activity on page 7 of the PDF (Plants—The Green Machines), learners examine the effects that light and air have on green plants.

$1 - $5 per student Ages 6 - 11 1 to 4 weeks
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In this activity, learners make film canister rocket ships. A fin pattern is glued onto the outside of the canister, and fuel (water and half an antacid tablet) is mixed inside the canister.

1 cent - $1 per student Ages 4 - 14 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
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In this simple activity, learners see the production of a gas, which visibly fills up a balloon placed over the neck of a bottle.

1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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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.

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners make acid/base indicator paper, place the indicator paper on an anthill, disturb a bunch of ants, and then observe what happens!

$1 - $5 per group Ages 6 - 11 45 to 60 minutes
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In this activity, learners use household materials to investigate and explore their ability to smell an odor.

Over $20 per group Ages 11 - 14 45 to 60 minutes
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This lesson focuses on molecular motion in gases. Learners compare the mass of a basketball when it is deflated and after it has been inflated.

$5 - $10 per group Ages 11 - 14 45 to 60 minutes
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In this chemistry demonstration, acid rain is simulated in a petri dish.

$1 - $5 per group Ages 14 - adult 5 to 10 minutes
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What does it mean to be alive? Is a cactus alive? Is a seed alive? Is the air we breathe alive? What are the necessary characteristics?

$1 - $5 per group Ages 11 - 14 1 to 2 hours
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This experiment allows learners to experience a small scale "epidemic," demonstrating the ease with which disease organisms are spread, and enables learners to determine the originator of the "epidemi

Over $20 per group Ages 14 - adult 4 to 24 hours
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In this outdoor activity, learners make their own organic-rich soil. Depending on where this activity is done, learners will probably discover that their local soil is low in organic matter.

$10 - $20 per group Ages 8 - 18 45 to 60 minutes