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In this activity, learners create volcanoes like those they have examined on Earth and Mars through images taken by spacecraft.

$10 - $20 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners identify the reproductive parts of plants and the animal (bee) structures involved in pollination.

1 cent - $1 per group Ages 8 - 14 30 to 45 minutes
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In this activity with several mini experiments, learners explore the chemistry that helps scientists learn about the environment and how they can help save it.

$1 - $5 per group Ages 8 - 14 4 to 24 hours
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In this activity, learners explore mammal locomotion by constructing flipbooks.

$1 - $5 per student Ages 6 - 14 10 to 30 minutes
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In this activity (on pages 29-35), learners examine water pollution and filtration.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity (posted on March 20, 2011), learners follow the steps to construct a stroboscope, a device that exploits the persistence of vision to make moving objects appear slow or stationary.

$5 - $10 per student Ages 8 - 18 1 to 2 hours
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In this very hands-on lesson, learners will investigate dendrochronology (the study of tree rings to answer ecological questions about the recent past) and come up with conclusions as to what possible

1 cent - $1 per group Ages 8 - 14 2 to 4 hours
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In this archaeology meets art activity, learners make a mosaic and consider the ways in which art communicates.

$10 - $20 per group Ages 8 - 18 1 to 7 days
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This activity (on pages 15-23) combines interactive role-playing and graphing to introduce learners to the health affects of pollen.

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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This activity was designed for blind learners, but all types of learners can have a tactile opportunity to construct a karyotype, an organized model of an organism’s chromosomes, conveying the chromos

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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In this activity (on pages 23-29), partners use the Plant Traveler Cards, along with a world map and map worksheets, to follow plants such as cassava, chocolate and coffee that grew first in one part

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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Did you know that the water we use today is the same water found on Earth millions of years ago? The Earth constantly uses and recycles water in a process called the water cycle.

$5 - $10 per group Ages 8 - 14 1 to 7 days
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In this outdoor activity/field trip, learners explore an aquatic site such as a pond, lake, stream, river or seashore to find and investigate plants and animals that live in water.

$5 - $10 per group Ages 6 - 11 1 to 2 hours
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In this activity, learners test exhaled breath for carbon dioxide and learn how to use an indicator as a simple way to measure pH.

$5 - $10 per student Ages 8 - 18 10 to 30 minutes
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In this activity, learners discover how landfills affect the natural environment.

free Ages 8 - 18 1 to 4 weeks
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In this activity, learners use transparent tape and polarizing material to create and project beautifully colored patterns reminiscent of abstract or geometric stained glass windows--no glass required

$10 - $20 per student Ages 6 - 14 10 to 30 minutes
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In this activity on page 8 of the PDF, learners make a slimy substance very similar to mucus, and sprinkle it with glitter to imitate the way that allergens are trapped.

$5 - $10 per student Ages 6 - 18 10 to 30 minutes
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In this construction activity, students use a 2-liter bottle to build a fly trap.

$1 - $5 per student Ages 4 - 14 1 to 7 days
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In this activity, learners create a "mini sky" in a glass of water in a dark room.

1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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In this activity, learners explore how eating unhealthy food can damage a heart and arteries.

1 cent - $1 per student Ages 8 - adult 5 to 10 minutes