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Learners make slime from white school glue and Borax detergent. The long chain molecules of the white glue become cross-linked by the Borax into a big network.

$1 - $5 per student Ages 4 - 14 10 to 30 minutes
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In this activity, learners will practice writing while making a fun messy craft. Learners will explore texture and color as well as develop writing and fine motor skills through this activity.

$1 - $5 per student Ages 4 - 14 30 to 45 minutes
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In this activity, learners work in groups to match craft sticks that represent chromosomes. Learners must define critical attributes of their chromosomes as they look for matching chromosomes.

$1 - $5 per group Ages 11 - 18 1 to 2 hours
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Learners add drops of alginate solution to a solution of calcium chloride. The alginate does not mix with the calcium chloride, but forms soft gel beads.

per group Ages 8 - adult 5 to 10 minutes
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In this activity (page 12), learners apply the concepts of pixilation and pointillism to the world of biomedical science.

$5 - $10 per group Ages 11 - 14 1 to 2 hours
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Learners press their fingertip onto a clean Plexiglas sheet. The fingerprints are then revealed as learners dust over the print with fingerprint powder.

$1 - $5 per group Ages 6 - adult Under 5 minutes
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This activity features two connected hands-on activities about dinosaur bones.

$1 - $5 Ages 8 - 18 1 to 7 days
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"Sublimation Bubbles" allows learners to explore how some solid materials, such as dry ice, can phase change directly from their solid to gaseous form.

Over $20 per group Ages 6 - adult 5 to 10 minutes
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"What's in the Water" lets participants use tools to solve the mystery- what chemicals and compounds are in a sample of water?

Over $20 per group Ages 6 - adult 5 to 10 minutes
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Learners mix vinegar and baking soda to produce a gas. With the addition of a bit of liquid soap, the gas becomes trapped in measurable bubbles.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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This is a quick game about self-assembly (page 2 of PDF under Self-Assembly Activity). Like the molecules of DNA, learners will self-assemble into a pattern by following a simple set of rules.

free Ages 8 - 14 10 to 30 minutes
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This activity (on page 2 of the PDF) features a recipe to create the stretchy polymer Flubber from Borax detergent, white glue, and water.

$1 - $5 per student Ages 4 - 14 10 to 30 minutes
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In this activity, learners use earthworms as "unknown creatures" from the South American jungle to find out how animals use senses.

1 cent - $1 per student Ages 8 - 18 45 to 60 minutes
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A group of learners simulates the spread of disease by trading slips of paper, one set of which has been treated with a baking soda solution.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners combine two substances (plaster of Paris and water) to make a cast of an object's imprint in clay.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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In this chemistry activity (page 5 of the PDF), learners make an acid-base indicator using cabbage. Learners then explore how various subtances react with this indicator.

Over $20 per group Ages 8 - 18 30 to 45 minutes
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In this activity, learners separate the protein from milk and and use it to make their own glue.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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Learners observe different paper samples under ordinary room light and under a black light to learn some of the chemical differences between different types of paper.

Over $20 per group Ages 6 - adult 10 to 30 minutes
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In this activity, learners explore how engineers have met the challenge of keeping foods, liquids, and other items cool.

$10 - $20 per group Ages 8 - 18 1 to 2 hours
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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