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This activity (on pages 7-13) has pairs of learners survey an array of similarities and differences between them.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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This activity (on pages 19-24) introduces learners to the rain forest's layers—emergent, canopy, understory, and forest floor—and has learners make paper lianas (vines that live attached to trees) and

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners will use their five senses to explore a nature-based area around them.

1 cent - $1 per student Ages 4 - adult 30 to 45 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, learners will explore how different colors of lights interact with objects around them. Will a blue object stay blue with a red filter?

$1 - $5 per student Ages 4 - 18 5 to 10 minutes
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In this game, learners try to find nano-related objects on a game board. Learners investigate the different ways nano is in the world around us.

1 cent - $1 per group Ages 4 - adult 10 to 30 minutes
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In this environmental health activity, learners grow and observe bread mold and other kinds of common fungi over the course of 3-7 days.

1 cent - $1 per group Ages 8 - 14 1 to 7 days
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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 dynamic activity, learners build a catapult that launches projectiles, such as marshmallows.

1 cent - $1 per group Ages 6 - 11 30 to 45 minutes
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In this optics activity, learners build a spy tool to secretly view things over walls or around corners.

$5 - $10 per student Ages 6 - 11 10 to 30 minutes
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In this engineering activity, learners construct sturdy geodesic structures out of gumdrops and toothpicks. Use this activity to explore engineering principles as well as sturdy shapes and triangles.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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During this activity, learners take part in a variety of tasks which involve moving and balancing different body parts.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures.

Over $20 per group Ages 4 - adult 5 to 10 minutes
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In "Chemistry Makes Scents," participants use their noses to distinguish between chemicals with very similar structures.

$10 - $20 per group Ages 6 - adult 5 to 10 minutes
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In this activity, learners will create a model rocket out of an inflated balloon attached to a straw on a taught string.

$1 - $5 per student Ages 4 - 11 5 to 10 minutes
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In this design challenge activity, learners investigate series circuits and motors to build a hand-held "kick stick." Their goal is create a battery-operated device that sends a Ping-Pong ball across

$5 - $10 per student Ages 8 - 14 45 to 60 minutes
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In this design challenge activity follow up to "Kicking Machine", learners add a hands-free feature to their Kicking Machine.

$5 - $10 per student Ages 8 - 14 30 to 45 minutes
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In this design challenge activity, learners make a balloon hover at eye level for five seconds, and then make it move by creating air currents.

$1 - $5 per student Ages 8 - 14 45 to 60 minutes
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In this design challenge activity, learners build a car that uses a battery-operated motor to "drive" at least ten feet.

$5 - $10 per student Ages 8 - 14 30 to 45 minutes
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In this activity, learners will investigate and compare the root systems of plants. Explore how weed and edible plant roots differ, and take a closer look inside with the careful use of a knife!

$1 - $5 per group Ages 4 - 18 10 to 30 minutes