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Learners design their own experiment to investigate how pollution diffuses through ground material.

$1 - $5 per group Ages 11 - 14 30 to 45 minutes
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In this two-part activity, learners investigate buoyancy, density and surface area as well as biodiversity and the relationship between the structure and function of organisms.

Over $20 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners explore how product design differences can affect the success of a final product -- in this case a bag for holding candy.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners separate materials based on their special properties to mimic the way recyclables are sorted at recycling centers.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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Students design and build their own parachutes in this hands-on engineering project.

$1 - $5 per group Ages 6 - 11 45 to 60 minutes
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In this physics activity, challenge learners to remove the bottom coin of a stack of nickels without knocking over the stack. Use this activity to demonstrate friction.

free Ages 6 - 11 Under 5 minutes
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In this activity, learners construct a playable kazoo from inexpensive materials. They will experience how vibration creates sound waves and music.

1 cent - $1 per group Ages 6 - 11 10 to 30 minutes
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In this activity, learners examine ways that Native Americans of the Southwest express their relationship with nature through art.

$5 - $10 per group Ages 4 - 11 30 to 45 minutes
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In this math game, learners throw dice and place the numbers in one of four boxes. Learners repeat this three more times and the learner with the largest four digit numbers is the winner.

1 cent - $1 per group Ages 8 - 14 5 to 10 minutes
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Design a vessel that tests the limits of wind power given a set of off the shelf and recycled materials.

1 cent - $1 per student Ages 6 - adult 30 to 45 minutes
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Coins are everyday objects which tell a lot about the people who use them.

1 cent - $1 per student Ages 6 - 14 10 to 30 minutes
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In this activity, learners explore how civil engineers solved the challenge of moving water via irrigation.

Over $20 per group Ages 8 - 18 1 to 2 hours
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A design challenge that takes paper airplanes into an entirely different direction: a magnus glider uses cups and and rubber bands to create a glider that uses the same forces that a curveball (from b

1 cent - $1 per student Ages 4 - adult 10 to 30 minutes
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In this activity, learners explore the concept of how brakes can stop or slow mechanical motion.

$5 - $10 per group Ages 8 - 11 45 to 60 minutes
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In this activity (on pages 49-54 of PDF), learners play with tangrams, a set of triangles, squares and a parallelogram that can combine into a larger square as well as all sorts of other shapes.

1 cent - $1 per student Ages 4 - adult 45 to 60 minutes
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In this data activity, learners analyze data from coral reef snapshots taken by scientists at the Virginia Institute of Marine Science.

free Ages 11 - 18 45 to 60 minutes
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Learners follow directions to construct a solar oven that really cooks! The solar oven uses aluminum foil to reflect sunlight into a cooking chamber, which is painted black.

$10 - $20 per group Ages 11 - 18 2 to 4 hours
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In this activity, learners will explore how and why weight distribution works.

$1 - $5 per group Ages 4 - adult 10 to 30 minutes
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Is a square stronger than a triangle? Use tongue depressors to build simple shapes. Then apply a little weight to them and see what happens!

1 cent - $1 per student Ages 4 - 8 5 to 10 minutes
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In this activity, learners will put a set of containers in order by capacity. Would the tallest container hold more or less water than the wide, short one?

free Ages 4 - 14 5 to 10 minutes