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In this activity, learners explore the concept of friction and how ball bearings reduce friction.

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners explore sensors and focus specifically on how to measure humidity using a sensor.

$10 - $20 per group Ages 8 - 18 1 to 2 hours
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In this online game, learners must purchase power plants for their city.

free Ages 8 - 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 simple activity, learners discover how a mere piece of paper can be used to hold up the weight of a heavy book.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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In this activity, learners make an equatorial sundial, which is simple to construct and teaches fundamental astronomical concepts. Learners use the provided template and a straw to build the sundial.

1 cent - $1 per group Ages 11 - 18 2 to 4 hours
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In this activity, learners explore how civil engineers solved the challenge of moving water via irrigation.

Over $20 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners explore the concept of how brakes can stop or slow mechanical motion.

$5 - $10 per group Ages 8 - 11 45 to 60 minutes
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In this engineering activity, challenge learners to build a tower out of 10 sheets of newspaper and 3 feet of masking tape, which can hold a golf ball balancing at the top.

1 cent - $1 per group Ages 6 - 11 10 to 30 minutes
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In this data activity, learners analyze data from coral reef snapshots taken by scientists at the Virginia Institute of Marine Science.

free Ages 11 - 18 45 to 60 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
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Cool off in the heat with this project! Learners use simple materials to build a fan that runs on a motor.

$5 - $10 per student Ages 8 - 18 10 to 30 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 activity, learners prepare four polymer elastomers and then compare their physical properties, such as texture, color, size, and bounce height.

$5 - $10 per group Ages 4 - 14 1 to 2 hours
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This is an activity (located on page 3 of the PDF under Nanosilver Activity) about diffusion of small molecules across cell membranes.

$10 - $20 per group Ages 8 - 14 1 to 7 days
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In this activity, learners build bridges using paper and explore how much weight each bridge design can support.

1 cent - $1 per group Ages 4 - 11 45 to 60 minutes
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In this neuroscience activity (4th activity on the page), learners make their own set of Von Frey hairs to test detection thresholds.

$1 - $5 per group Ages 8 - 18 5 to 10 minutes
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In this activity, learners build bridges and cantilevers in a series of "building out" challenges with straws and pins.

$1 - $5 per group Ages 4 - 14 1 to 2 hours
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In this technology activity, learners build an "alarming" doormat to keep siblings out of their rooms. Use this activity to teach learners about circuits, switches, and sensors.

$5 - $10 per group Ages 8 - 14 45 to 60 minutes