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In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.

$1 - $5 per student Ages 6 - 18 30 to 45 minutes
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Scientists use enormous wind tunnels to test the design of planes, helicopters, even the Space Shuttle.

$5 - $10 per group Ages 6 - 14 10 to 30 minutes
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In this activity related to microbes, learners create scale models of microorganisms and compare relative sizes of common bacteria, viruses, fungi and protozoa using metric measures: meters, centimete

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners build scaled-down structures and cantilevers in a series of "building out" challenges with bamboo skewers and tape.

$5 - $10 per group Ages 6 - 14 2 to 4 hours
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In this activity, learners discover that some things only stand up while they are spinning.

$1 - $5 per student Ages 8 - 14 1 to 2 hours
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In this activity, learners make a Benham Top to explore visual illusions and optics.

$1 - $5 per student Ages 8 - 18 30 to 45 minutes
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In this math lesson, learners explore and investigate measurement using standard and non-standard units.

$10 - $20 per group Ages 6 - 8 1 to 2 hours
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In this activity, learners experience firsthand how marine animals' adaptive coloration camouflages them from prey.

$1 - $5 per group Ages 14 - 18 45 to 60 minutes
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In this activity (page 4), learners work in groups to plan and build large structures using recyclable materials they have brought from home.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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In this activity, learners design and build a simple wind vane —one of the oldest kinds of weather tools— and use it to show wind direction.

$5 - $10 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners simulate what happens to a human spine in space by making Sponge Spool Spines (alternating sponge pieces and spools threaded on a pipe cleaner).

$5 - $10 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners make or use pre-made clay beams to scale and proportion. Specifically, they discover that when you scale up proportionally (i.e.

$10 - $20 per group Ages 4 - 14 45 to 60 minutes
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In this activity, learners take measurements and create charts to learn about the size of dinosaurs and their relative scale to humans.

$5 - $10 per group Ages 8 - 11 1 to 2 hours
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Learners explore capillary action in plants (such as plants ability to move water from roots to leaves) in an investigation called Paper Blooms.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this chemistry activity, learners use thin layer chromatography to determine the molecular composition of different markers.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this activity with several mini experiments, learners explore the chemistry that helps scientists learn about the environment and how they can help save it.

$1 - $5 per group Ages 8 - 14 4 to 24 hours
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Build your own Mini Mini Golf Course and learn about hands-on building and design, basic circuitry, motion modules and more!

$5 - $10 per student Ages 8 - 18 1 to 4 weeks
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In this activity, learners explore how engineers have improved roofing designs and materials in order to protect the contents of buildings.

$10 - $20 per group Ages 8 - 18 1 to 2 hours
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In this lesson, learners develop a robot arm using common materials. Learners explore design, construction, and teamwork, as well as materials selection and use.

$10 - $20 per group Ages 8 - 18 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