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In this design challenge activity, learners design and build a circuit: an "electric highway" that connects a battery and buzzer at least three feet apart using four types of materials.

$5 - $10 per student Ages 8 - 14 10 to 30 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 invention challenge activity, learners create an indoor game for one or two people that gets you moving.

$10 - $20 per group Ages 8 - 14 30 to 45 minutes
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Learners make a circuit board that has questions and answers. When the correct answer is chosen for a question, a circuit is completed and a light illuminates.

$5 - $10 per student Ages 8 - 14 30 to 45 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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This demonstration can be used to help learners visualize DNA by lysing (breaking open) bacterial cells on a slide and “stringing up” the DNA with a toothpick in less than one minute.

$10 - $20 per group Ages 11 - 18 5 to 10 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 indoor and/or outdoor activity, learners make an anemometer (an instrument to measure wind speed) out of a protractor, a ping pong ball and a length of thread or fishing line.

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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In this optics activity, learners examine how a transparent material such as glass or water can actually reflect light better than any mirror.

1 cent - $1 per group Ages 8 - 18 10 to 30 minutes
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In this activity, learners discover how NASA engineers develop experimental aircraft.

$10 - $20 per group Ages 11 - 14 1 to 2 hours
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In this activity, learners explore the engineering behind seismographs and how technology has improved accurate recording of earthquakes.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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Learners design their own experiment to explore the permeability of different materials such as soil, sand, gravel, and marbles.

$5 - $10 per group Ages 11 - 14 45 to 60 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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Learners explore magnetism and motion as they build a simple marble run. Learners test different arrangements of plastic and cardboard tubes, bottles, and cups on a magnetic board.

$5 - $10 per student Ages 6 - 14 1 to 2 hours
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In this activity, learners test the rate of ripening fruit and vegetables and use a chemical to inhibit the ripening process.

$10 - $20 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners explore how the process of folding has impacts on engineering and is evident in nature.

$10 - $20 per group Ages 8 - 18 1 to 2 hours
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In this optics activity, learners make a "light fountain" from a clear plastic bottle, flashlight, and other simple materials.

1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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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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In this activity, learners explore how engineers have developed big wheels or Ferris wheels.

$5 - $10 per group Ages 8 - 18 1 to 2 hours