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In this engineering activity, challenge learners to invent a water filter that cleans dirty water.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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In this design challenge activity, learners build a machine out of cardboard that runs smoothly and dependably. Learners must be precise to make sure their component works properly.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this ocean engineering activity, learners explore buoyancy and water displacement. Then, learners design models of deep sea divers that are neutrally buoyant.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners will make seed orbs to grow new trees and plants. Learners will explore ecology and life cycles as well as stewardship through this activity.

$1 - $5 per student Ages 4 - 14 10 to 30 minutes
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In this invention challenge activity, learners see how many objects they can grab with a homemade "bionic" arm.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this activity, learners use simple items to construct a device for indicating air pressure changes.

$1 - $5 per student Ages 8 - 18 1 to 4 weeks
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In this physics activity, challenge learners to make and race a balloon-powered car. Learners construct the body out of a paper cup, wheels out of wooden spools. and fuel tank out of a balloon.

$1 - $5 per student Ages 6 - 11 5 to 10 minutes
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In this activity, challenge learners to make a pencil stand on its tip using only two pieces of wire and two clothespins. Use this activity to demonstrate the center of gravity.

$1 - $5 per student Ages 6 - 11 5 to 10 minutes
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Learners make a simple battery out of "sandwiches" of aluminum foil, pennies, and a salt water-soaked paper towel.

$1 - $5 per group Ages 8 - 14 5 to 10 minutes
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In this team design challenge (page 2-10 of PDF), learners design and build a model of a Lunar Transport Rover that will carry equipment and people on the surface of the Moon.

$1 - $5 per group Ages 11 - 14 1 to 2 hours
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In this activity, learners work individually to assemble a product and then work in teams to design, construct, test, and redesign an assembly line process whose product must meet specific quality con

$1 - $5 per group Ages 8 - 18 1 to 2 hours
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This is written as a display, but can easily be adapted to a hands-on activity. Learners discover how all the parts of a diaper work together to keep babies dry and comfortable.

$1 - $5 per group Ages 6 - 14 5 to 10 minutes
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In this activity, learners build small animated toys that move.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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In this activity, learners build a figure that moves and "comes to life" when they pull its string.

$1 - $5 per student Ages 6 - 14 1 to 2 hours
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In this team design challenge (page 11-18 of PDF), learners design and build a Landing Pod for a model Lunar Rover (previously built in activity on page 1-10 of PDF).

$1 - $5 per group Ages 11 - 14 1 to 2 hours
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This fun activity uses simple materials such as milk cartons and mirrors to introduce the ideas of optics and visual perception.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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In this experience, learners use the internet to research physical details about Chihuly's Fireworks of Glass "Tower" and "Ceiling" and consider the decisions Chihuly had to make as he was planning th

$1 - $5 per group Ages 8 - 11 1 to 2 hours
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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
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In this calculus activity, learners use a classic problem of geometrical probability to find an important mathematical constant (pi).

$1 - $5 per group Ages 14 - 18 10 to 30 minutes
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In this activity, learners make homemade journals featuring seashell rubbings. First, learners transfer the texture of a seashell onto a piece of paper using a crayon.

$1 - $5 per student Ages 6 - 11 30 to 45 minutes