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Learners are given mysterious white powders and have to determine their identity with chemical tests.

$1 - $5 per group Ages 11 - adult 10 to 30 minutes
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Groups of learners are provided with a generic car base and an egg. Their mission: design a device/enclosure to protect the egg on or in the car as it rolls down a ramp with increasing slopes.

Over $20 per group Ages 11 - 18 1 to 2 hours
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In this activity, learners make slides of onion cells and their own cheek cells. Use this lab to teach learners how to prepare microscope slides and use a microscope.

$5 - $10 per student Ages 8 - 18 45 to 60 minutes
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In this lab activity, learners explore how to initiate a density current. Learners measure six flasks with different concentrations of salt and water (colored blue).

1 cent - $1 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners create a traditional Mexican noisemaker (a matraca) using cardboard, craft sticks, and a wooden dowel.

$1 - $5 per student Ages 6 - 18 1 to 2 hours
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In this activity, a spinning bicycle wheel resists efforts to tilt it and point the axle in a new direction.

$5 - $10 per group Ages 11 - 18 10 to 30 minutes
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Visitors prepare six solutions combining vinegar and ammonia that range incrementally from acid (all vinegar) to base (all ammonia).

$1 - $5 per group Ages 6 - adult Under 5 minutes
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In this activity, learners simulate taking HIV antiretroviral drugs by using Tic Tac mints and Kool-Aid packets.

$5 - $10 per group Ages 11 - 18 1 to 4 weeks
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In this activity, learners sniff out scents hidden in balloons! After investigating, learners discover we sometimes can use another sense (smell) to detect things too small to see.

$5 - $10 per group Ages 4 - adult 5 to 10 minutes
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In this design challenge, learners will use microbes to design and grow a custom biomaterial at home and make something creative with it.

$5 - $10 per student Ages 8 - adult 1 to 7 days
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In this activity, learners explore how nanotechnology is being used to create new types of protective fabrics.

Over $20 per group Ages 6 - adult 10 to 30 minutes
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In this design challenge, learners will practice empathy and design thinking skills by creating an invention of the future.

free Ages 6 - adult 10 to 30 minutes
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In this activity, learners walk the sides and interior angles of various polygons drawn on the playground. As they do so, learners practice rotating clockwise 180° and 360°.

1 cent - $1 per group Ages 11 - 18 5 to 10 minutes
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In this activity, learners use a flexible magnet as a model for a scanning probe microscope (SPM). They learn that SPMs are an example of a special tool that scientists use to work on the nanoscale.

$10 - $20 per group Ages 4 - adult 5 to 10 minutes
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This fun and simple hands-on astronomy activity lets learners create 3D models of the Earth, Moon and Sun to demonstrate solar and lunar eclipses.

$5 - $10 per group Ages 6 - adult 10 to 30 minutes
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Learners mix a solution containing luminol and copper with a fake blood solution. A chemical reaction between the luminol solution and fake blood (hydrogen peroxide) show learners a blue glow.

$1 - $5 per group Ages 11 - adult 5 to 10 minutes
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In this activity, learners discuss the different salinities of oceans, rivers and estuaries.

$5 - $10 per group Ages 8 - adult 1 to 7 days
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In this activity, learners use a laser pointer and two small rotating mirrors to create a variety of fascinating patterns, which can be easily and dramatically projected on a wall or screen.

Over $20 per group Ages 11 - 18 1 to 2 hours
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In this activity, learners discover how the extent of various wind speeds changes in each of the four quadrants around a hurricane.

free Ages 11 - 18 10 to 30 minutes
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In this activity, learners explore the economics of coal mining as you they use fake money to purchase mining tools, attempt to carefully mine their cookies, sell their chocolate chip ore, and try to

$5 - $10 per student Ages 6 - adult 10 to 30 minutes