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Mirror, Mirror
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In this activity, learners test the Law of Reflection based on experimental evidence. Learners produce raw data and explanations based on their data: pencil tracings of incident and reflection rays.

It's a Gas!
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In this activity, learners explore two properties of gases: gases take up space and exert pressure. Learners assemble two flasks and a beaker, connecting them with stoppers and tubing.
Happy City
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Make a model city happier with LEDs, circuits, motors, and batteries! Groups can think, discuss, design, and build what would make a community happy. Kids can work as part of a team or on their own.

Rock Candy
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In this yummy chemistry activity which requires adult supervision, learners use sugar and water to explore how crystals form.

Nature of Dye
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"Nature of Dye" allows participants to create their own dyes and art while exploring how chemicals interact and how these interactions can have real-world applications.

Pipeline Challenge
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In this activity, learners explore how engineers develop pipeline systems to transport oil, water, gas, and other materials over very long distances.
Stability of Egg White Foams
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In this chemistry meets cooking activity, learners compare the stability of egg white foams with various additives.

Rubber Band Racers
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In this activity, learners explore the design of rubber band powered cars. Learners work in teams of "engineers" to design and build their own rubber band cars out of everyday items.
Coral and Chemistry
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In this experiment, learners will explore whether increased carbon dioxide makes our oceans more basic or more acidic.

Food Forensics: A Case of Mistaken Identity
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This lesson is designed to serve as an introduction to the immune system. It can stand alone or it can lead into further studies of the immune system.

Coffee-Can Cuíca
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Make a cuíca (“kwee-ka”), a traditional Brazilian musical instrument that originated in Africa. Played primarily in Brazil, now you can play it at home, too, with this Exploratorium produced activity.

The Squeeze Box
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In this geology activity learners build a "squeeze box," which allows them to compress layers of sediment. This is a great way to investigate folding and faulting in the Earth.

Radioactive-Decay Model: Substitute coins for radiation
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Get a roll of pennies, throw them on the ground, then remove those that only show tails, and repeat with the ones left over.

Pop Rockets
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Learners place water and part of an antacid tablet in a film canister. The reaction creates a gas reaction that launches the film canister like a rocket.

Candy Chemosynthesis
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In this activity, groups of learners work together to create edible models of chemicals involved in autotrophic nutrition.

Making Metals Strong
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In this activity, learners demonstrate the effects of cold-working (strain-hardening) and annealing. Learners discover that these processes change the load that a wire can support.

Black Holes: No Escape
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This fun and simple hands-on astronomy activity lets learners experiment with marbles and weights to discover some basics about gravity and black holes.

Float Your Boat
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In this physics activity, learners will explore buoyancy.

Dancing Compasses
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Learners use compasses to detect the magnetic field created by current moving through a wire. This is one of four activities learners can complete related to PhysicsQuest 2008.

No Saliva, No Taste?
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In this activity (4th activity on the page), learners test to see if saliva is necessary for food to have taste.