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This hands-on experiment will provide learners with an understanding of the issues that surround environmental cleanup.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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Through discussion and hands-on experimentation, learners examine the geological (ancient) carbon cycle.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes
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In this activity, learners explore how pens have been engineered and re-engineered over time. Learners work as a team to develop a working pen out of everyday items.

$10 - $20 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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Learners design their own experiment to determine conditions that either help or hinder the decomposition of carrots by soil microbes.

$10 - $20 per group Ages 11 - 14 1 to 4 weeks
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Learners initially test to see how many drops of liquid (water, rubbing alcohol, and vegetable oil) can fit on a penny.

$1 - $5 per group Ages 11 - 14 10 to 30 minutes
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Each learner chews a piece of gum until it loses its flavor, and then leaves the gum to dry for several days.

$1 - $5 per group Ages 11 - 14 2 to 4 hours
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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 two part activity, learners work in pairs or individually to discover how vectoring the thrust from a jet engine affects movement of an airplane.

$1 - $5 per student Ages 8 - 14 45 to 60 minutes
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Using simple, inexpensive items, learners build and test submarine models.

$10 - $20 per group Ages 11 - 18 45 to 60 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 two-part activity, learners work in pairs to examine the four basic stages of a turbine engine.

Over $20 per group Ages 11 - 14 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 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 activity, learners mix milk, vinegar, baking soda, and water to create sticky glue. Use this activity to explain how engineers develop and evaluate new materials and products.

$1 - $5 per student Ages 6 - 11 45 to 60 minutes
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In this activity, learners explore the devices used over time to measure changes in temperature.

$1 - $5 per group Ages 8 - 18 1 to 2 hours
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This activity (on page 2 of the PDF under SciGirls Activity: Hovercraft) is a full inquiry investigation into hovercraft engineering and design optimization.

Over $20 per group Ages 8 - 14 1 to 7 days
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This activity teaches combustion as the interaction of a fuel source and oxygen.

$1 - $5 per student Ages 4 - 8 5 to 10 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