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In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.

Over $20 per group Ages 4 - 14 10 to 30 minutes
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In this activity, learners estimate how much water they think can be found in various locations on the Earth in all its states (solid, liquid, and gas) to discover the different water ratios in the Ea

free Ages 6 - 14 10 to 30 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 physics activity (page 8-9 of the PDF), learners will explore wind energy. They will build their own windmill and see how energy from wind can be converted into a useable form.

$1 - $5 per group Ages 6 - 11 30 to 45 minutes
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In this demonstration, learners observe the effects of density and pressure by attempting to make "balloon kebabs." Learners will try to insert a wooden skewer all the way through an inflated balloon

$1 - $5 per group Ages 6 - adult 5 to 10 minutes
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In this activity, learners explore how distance can affect the way we perceive the size of an object.

free Ages 4 - 18 5 to 10 minutes
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Experiment with force and pressure by building a balloon rocket. When launched, the balloon will run a track wherever you place the string.

1 cent - $1 per student Ages 4 - 11 30 to 45 minutes
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This creative lesson plan provides a visual way for learners to gain knowledge about the finite amount of fresh water on Earth and encourages the discussion of the various ways to conserve this resour

$1 - $5 per group Ages 6 - 14 10 to 30 minutes