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In this activity, learners build water-propelled engines from soft drink cans.

$1 - $5 per group Ages 4 - 14 30 to 45 minutes
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In this hands-on engineering project, kids use two simple machines, levers and inclined planes, to construct their own pinball machines.

$1 - $5 per student Ages 6 - 11 30 to 45 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 activity, challenge learners to keep an ice cube from completely melting in 30 minutes. Learners engineer a box or wrap to prevent an ice cube from melting.

$1 - $5 per student Ages 6 - 11 30 to 45 minutes
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In this activity, learners will engineer a roof using simple materials to protect a construction paper person from a rainstorm.

free Ages 6 - adult 10 to 30 minutes
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In this activity, learners will use household items to design and build an elevator that will carry 2 passengers to a height of 16 inches...or higher!

free Ages 6 - adult 30 to 45 minutes
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In this activity, learners engineer a paper helicopter that spins to the ground when dropped.

1 cent - $1 per student Ages 4 - 11 10 to 30 minutes
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In this engineering activity (page 2 of PDF), young learners investigate how a wide base can make a building more stable. Learners use blocks or boxes of different sizes to construct stable towers.

$1 - $5 per group Ages 4 - 8 30 to 45 minutes
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In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.

Over $20 per group Ages 4 - 14 10 to 30 minutes
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In this engineering activity, challenge learners to make a "grabber" that can pick up trash. Learners use simple materials to create pinchers that can grab small items.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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In this engineering activity (page 3 of PDF), young learners investigate how a pole can be made stable by “planting” its base in the ground or adding supports to the base.

$1 - $5 per group Ages 4 - 8 30 to 45 minutes
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In this engineering activity (page 5 of PDF), young learners investigate how materials and design contribute to the strength of a structure, particularly walls.

$1 - $5 per group Ages 4 - 8 45 to 60 minutes
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In this activity, learners consider how a simple machine, a lever, turns a small push or pull (a small force) into a larger--or stronger--push or pull (a larger force).

Over $20 per group Ages 4 - 11 10 to 30 minutes
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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 activity, learners design a bungee jump for an egg using nylon stockings.

$1 - $5 per student Ages 6 - 11 30 to 45 minutes
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In this engineering activity, challenge learners to design a car using only 3 straws, 4 Lifesavers™, 1 piece of paper, 2 paper clips, tape, and scissors.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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In this engineering/design/arts and crafts activity, learners design and build "platforms" or "bridges" that can hold weight, and test which glue makes the strongest structure.

$1 - $5 per student Ages 6 - 14 1 to 2 hours
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In this activity, learners are invited to imagine the park of their dreams!

$1 - $5 per group Ages 4 - 11 45 to 60 minutes
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In this hands-on activity, learners use an assortment of (mainly household) items to complete Rube Goldberg-type challenges.

$1 - $5 per student Ages 4 - adult 10 to 30 minutes
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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