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Mystery Sand
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In this activity, learners play with surprising sand that doesn’t get wet! Learners explore how water behaves differently when it comes in contact with "magic sand" and regular sand.

Modeling an HIV Particle
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This activity helps learners visualize the Human Immunodeficiency Virus (HIV) by constructing three-dimensional HIV particle models from paper.

Kool Colors
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Learn about dyes and mordants (fixatives) when you tie-dye fabric with Kool-Aid™ and vinegar. The colored molecules in Kool-Aid™ form a chemical bond between the fiber and dye molecules.

Moving Without Wheels
In a class demonstration, learners observe a simple water cycle model to better understand its role in pollutant transport.

Mineral Hunt
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In this activity, learners search for various kinds of items made from minerals around their home or school, including toothpaste, wall paint, kitty litter, and bricks.

Working with Watermills
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In this activity, learners explore how watermills have helped harness energy from water through the ages.

Balancing Sculptures
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In this activity, learners will use a variety of household and/or natural objects to design a sculpture that balances from a single point.

Gelatin Used for Drug Delivery
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In this activity, learners discover how gelatin can be used as a medium for drug delivery. Learners create colored gelatin and then cut out pieces of the gelatin to simulate medicine (pills).

Nano Waterproofing
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This lesson focuses on how nanotechnology has impacted the design and engineering of many everyday items from paint to fabrics.

Rolling Action Art
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In this activity, learners of all ages will roll a ball coated with paint to artistically visualize the motion of the object.

Hot Stuff!: Carbon Dioxide Extinguishes a Flame
In this demonstration, learners observe vinegar and baking soda creating carbon dioxide (CO2) in a bottle. The gas is poured out of a bottle onto a candle flame, putting out the candle.

Safe Food Preparation
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In this activity about food safety and nutrition, learners investigate safe food preparation by making fruit ice cream.

Reaction Time
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In this activity, learners explore reaction time and challenge themselves to improve their coordination. Do you want to move faster? Catch that ball that you never seem to see in time?

What Color is Your Air Today?
Learners develop awareness and understanding of the daily air quality using the Air Quality Index (AQI) listed in the newspaper or online.

Food Webs
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In this activity, learners construct possible food webs for six different ecosystems as they learn about the roles of different kinds of living organisms.

Organ Pipe: Get Bach to the fundamentals
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If you got a big graduated or clear cylinder, water, a pipe, and a tuning fork, you've got a sound learning opportunity! Learn about resonance with this Exploratorium Science Snack.

Engineer A Bird Feeder
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In this activity, learners of all ages will design a functional bird feeder using familiar, every day materials.

Cold Metal
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In this activity, learners discover that our hands are not reliable thermometers.

How Long Can You Hold Your Breath?
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In this activity (on page 142 of the PDF), learners will compare breathing rates before and after hyperventilation to explore how reduced carbon dioxide levels in the blood lower the need to breathe.

Slide Projector Activities
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This resource contains several mini-explorations using a slide projector as a light source to investigate light and the properties of images.