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In this outdoor activity, learners release a portion of a lawn from human control—no mowing, no watering, no weeding, no pest control—and then investigate the changes that result over several weeks.

Over $20 per group Ages 6 - 14 1 to 12 months
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In this crafty chemistry activity (on page 2 of the PDF), learners make their own paper from used paper they may have otherwise thrown away.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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In this family or group activity, learners conduct a chromatography experiment to reveal the colors that leaves "hide" under their green pigments.

$1 - $5 per student Ages 6 - 14 45 to 60 minutes
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In this two-part activity, learners compare and contrast a variety of life cycles to better understand different organisms and how they develop.

$1 - $5 per group Ages 6 - 11 1 to 7 days
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In this activity, learners will simulate the processes of the water cycle at home in a plastic sandwich bag.

$1 - $5 per group Ages 4 - 11 1 to 7 days
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In this activity, learners explore the web of connections among living and non-living things.

1 cent - $1 per group Ages 4 - 14 30 to 45 minutes
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In this activity, learners survey living organisms near where they live or go to school, and create a local field guide.

$1 - $5 per group Ages 6 - adult 30 to 45 minutes
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In this activity, learners will discover how the thin layers of amphibians' skin allow water and other chemicals to pass through it.

$1 - $5 per group Ages 6 - adult 1 to 7 days
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In this game, learners explore the different sizes of things in the world. In this Twister-like game, learners must place a hand or foot on a circle of the right scale - macro, micro, or nano.

$10 - $20 per group Ages 4 - adult 10 to 30 minutes
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In this activity (located at the bottom of the page), learners investigate soil and explore the creatures that live in it.

free Ages 4 - 11 1 to 7 days
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In this activity, learners will collect, dry and press seaweed over the course of four days in a similar way that artists/crafters press flowers.

1 cent - $1 per student Ages 4 - 14 1 to 7 days
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In this activity, young learners will make their own flower seed nursery in an egg carton.

$1 - $5 per group Ages 4 - adult 1 to 4 weeks
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The Butterflies in Space Teacher's Guide uses "life in space" to encourage learners to conduct their own open-ended scientific investigations.

Over $20 per group Ages 6 - 18 1 to 4 weeks
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In this family or group activity, learners create a nature journal by visiting a local nature center or backyard, observing creatures in their natural habitats, and sketching what they see.

1 cent - $1 per group Ages 6 - 11
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In this activity (on page 2 of the PDF), learners explore surface tension by adding pennies to cups which are "full" of plain water or soapy water.

1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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In this activity, learners can play two card games related to endangered species, specifically North American amphibians.

1 cent - $1 Ages 6 - 11 5 to 10 minutes
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In this outdoor activity, learners turn the fun of feeding wild birds into an investigation of bird behavior.

Over $20 per group Ages 6 - 14 45 to 60 minutes
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In this outdoor, nighttime activity, learners gather around a brightly lit, white surface and study the behavior of nocturnal animals attracted to the light, particularly night fliers.

$1 - $5 per group Ages 4 - 14 45 to 60 minutes
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In this activity, learners will experiment to find how long it takes to compost paper. They will create their own compost container and test different variables.

1 cent - $1 per student Ages 6 - adult 1 to 4 weeks
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In this activity/demo, learners examine a synthetic gecko tape with micron sized hairs that mimics the behavior of the gecko foot.

Over $20 per group Ages 6 - adult 10 to 30 minutes