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In this activity about phase change and condensation, learners boil water in an empty pop bottle in the microwave.

1 cent - $1 per group Ages 8 - 14 Under 5 minutes
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In this activity, learners compare frog eggs to chicken eggs to better understand why frog eggs need water. Learners compare a boiled chicken egg to "frog eggs" represented by boiled tapioca.

$1 - $5 per student Ages 4 - 14 4 to 24 hours
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In this activity on page 4 of the PDF (Behind the Scenes with Chemistry), learners make some special effects, including snow and breaking glass, with supplies found in the home.

$10 - $20 per student Ages 8 - 14 1 to 2 hours
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In this activity on page 3 of the PDF, learners create a collage by using vinegar to transfer color pictures from a newspaper onto a piece of white paper.

$1 - $5 per student Ages 6 - 14 10 to 30 minutes
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In this optics activity, learners explore color by examining color dots through colored water and the light of a flashlight.

1 cent - $1 per student Ages 6 - 14 10 to 30 minutes
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In this chemistry activity (page 3 of the PDF), learners will learn about crystals by growing their very own.

$1 - $5 per student Ages 6 - 14 1 to 7 days
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In this optics activity, learners make a lens and explore how the eye manipulates the light that enters it.

1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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In this activity on page 6 of the PDF, learners dissolve Epsom salt in water and discover that the resulting solution can be used to create a work of art.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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In this activity, learners use simple materials to create giant bubbles.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners follow a recipe to make hollandaise sauce. Learners discover how cooks use egg yolks to blend oil and water together into a smooth mix.

$1 - $5 per group Ages 6 - 14 5 to 10 minutes
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In this chemistry demonstration, learners investigate the factors that increase the rate of dissolution for a solid.

1 cent - $1 per group Ages 11 - 18 5 to 10 minutes
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“Exploring Earth: Rising Sea” is a hands-on activity demonstrating ways to use topographical mapping techniques to track changes in sea level. The activity is connected to current NASA research.

free Ages 6 - 14 5 to 10 minutes
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In this optics activity, learners use glass and water to demonstrate total internal reflection (TIR).

free Ages 8 - 14 Under 5 minutes
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In this activity, learners explore the chemical reaction between water and effervescent antacid tablets. This hands-on activity models how a material can act differently when it's nanometer-sized.

$1 - $5 per group Ages 4 - adult 5 to 10 minutes
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In this activity, learners create a "mini sky" in a glass of water in a dark room.

1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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In this ocean engineering activity, learners explore buoyancy and water displacement. Then, learners design models of deep sea divers that are neutrally buoyant.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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This is a quick activity/demonstration that introduces learners to the concept of index of refraction. Learners place stirring rods in a jar of water and notice they can see them clearly.

1 cent - $1 per group Ages 8 - 18 Under 5 minutes
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In this demonstration, learners observe how liquid nitrogen both boils and freezes ingredients to make ice cream in two minutes.

$10 - $20 per group Ages 6 - 14 Under 5 minutes
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In this quick activity/demonstration about density, learners examine what happens when two cans of root beer--one diet and one regular--are placed in a large container of water.

1 cent - $1 per group Ages 4 - 14 Under 5 minutes
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Visitors observe a bottle with a balloon attached around the mouth. The bottle contains a solution of yeast, sugar, and water.

$1 - $5 per group Ages 6 - adult Under 5 minutes