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This is an online Flash game where learners can experiment with ballistics and how to compensate for the varying levels of gravity found on the planets of our Solar System.

free Ages 6 - 14 5 to 10 minutes
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In this group activity, learners will explore the characteristics, functions and uniqueness of the mangrove tree.

$1 - $5 per group Ages 4 - 14 45 to 60 minutes
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In this activity, learners construct a projector out of cardboard to view their favorite images (such as storybook illustrations) on the wall.

$10 - $20 per student Ages 8 - 14 1 to 2 hours
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In this activity (page 1 of the PDF under SciGirls Activity: Bogs), learners will test cups full of potting soil, sand, and sphagnum moss to see which earth material is able to soak up the most water.

$5 - $10 per group Ages 8 - 14 30 to 45 minutes
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With three cans and some tape, make a drum that you bonk down on any surface to produce a variety of sounds. This activity also teaches you about pitch, vibration, and frequency.

1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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In this activity, learners investigate the properties of plastic bags. Learners find out what happens when they slowly push a pencil through a plastic bag filled with water.

1 cent - $1 per group Ages 4 - 11 10 to 30 minutes
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In this activity, learners will make cleaning up more fun with predictions and counting. Estimate how many things are on the floor (or table), then count as they are picked up.

free Ages 4 - 11 5 to 10 minutes
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In this activity, learners build unique sound enhancing inventions with items from around the house to amplify sound from their smart phone's speakers.

$5 - $10 per student Ages 6 - 14 10 to 30 minutes
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This is part 1 of the three-part "Crayon Rock Cycle" activity. In this activity, learners explore how sedimentary rocks form.

$5 - $10 per student Ages 4 - adult 10 to 30 minutes
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In this activity, learners model a population of deer and see how the number of deer changes over time.

free Ages 11 - 18 10 to 30 minutes
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In this activity, learners discover a trick to release the air out of a balloon without popping it.

1 cent - $1 per student Ages 8 - 18 Under 5 minutes
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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.

free Ages 8 - 18 30 to 45 minutes
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In this activity, learners make optical fibers out of strips of gelatin.

$1 - $5 per group Ages 8 - 14 2 to 4 hours
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In this activity, learners compare frog eggs to chicken eggs to better understand why frog eggs need water. Learners compare a boiled chicken egg to "frog eggs" represented by boiled tapioca.

$1 - $5 per student Ages 4 - 14 4 to 24 hours
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In this math lesson (page 2 of the PDF), learners use bottles of various shapes to explore the abstract concept of rate of change.

1 cent - $1 per group Ages 14 - 18 45 to 60 minutes
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In this interactive game, learners will test their memory of animal and insect sounds. Flip over cards, listen to the sound, and try to find the ones that match.

free Ages 4 - 14 5 to 10 minutes
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In this math activity (Page 10 of the Play Ball! PDF), learners play a game of "football" and analyze the results of the game.

1 cent - $1 per group Ages 8 - 14 30 to 45 minutes
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In this biology activity, learners recreate the process of digestion in a zip lock bag. A bit of soda pop added to some crumbled crackers approximates how acids in the stomach dissolve food.

1 cent - $1 per student Ages 8 - 11 5 to 10 minutes
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In this online game, learners must keep their snowboarding racer in the middle of the course without veering off track or hitting obstacles.

free Ages 6 - 11 Under 5 minutes
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In this activity, learners use their estimation skills to match the unmarked containers to their amounts.

free Ages 4 - 8 10 to 30 minutes