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In this activity, explore chromatography and the various colors that make up the ink in markers. Use this activity to investigate cohesion and adhesion.

1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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In this activity, learners make plates levitate! Learners build "hovercrafts" using simple materials to explore friction and motion.

$1 - $5 per student Ages 6 - 11 5 to 10 minutes
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In this design challenge activity, learners use a balloon and other simple materials to design an air-powered rocket that can hit a distant target.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this water activity, learners discover ways to move water across the water table.

$5 - $10 per group Ages 4 - 6 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 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 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 event guide features three related explorations in which learners investigate the following science concepts: how you design and build a structure helps determine how strong it will be; different

$5 - $10 per group Ages 4 - 6 45 to 60 minutes
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In this activity, learners engineer a flying glider using paper hoops and a drinking straw.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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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, 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 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 design challenge activity, learners build a rubber band-powered rover that can scramble across the room.

1 cent - $1 per student Ages 11 - 18 30 to 45 minutes
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In this design challenge, learners build a boat that paddles itself using a rubber band as its power source.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this design challenge activity, learners invent a device that will make their friends and family ask, "What's buzzing?" Learners design an alarm with an on/off switch that is small enough to hide.

$5 - $10 per student Ages 8 - 14 10 to 30 minutes
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In this engineering activity, challenge learners to construct a paper bridge that can support 100 pennies.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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In this design challenge activity, learners invent a pinball-like game where a kick stick hits a ping pong ball into a target that buzzes.

$10 - $20 per student Ages 8 - 14 45 to 60 minutes
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In this design challenge activity, learners modify a cup so it can carry a marble down a zip line and also drop it onto a target.

$1 - $5 per student Ages 8 - 18 45 to 60 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