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Observing Earthworm Locomotion
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In this activity, learners collect worms and then observe how they move.

Make a Terrarium
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In this activity, learners make a miniature greenhouse or "terrarium" to explore the greenhouse effect.

Transit Tracks
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In this space science activity, learners explore transits and the conditions when a transit may be seen.

Total Internal Reflection
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In this activity, learners use a laser pointer, empty soda bottle, rubber plug and water to demonstrate total internal reflection.

Eclipse: How can the little Moon hide the giant Sun?
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In this activity, learners explore how distance can affect the way we perceive the size of an object.

Gas Producing Micro-Reaction
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In this chemistry activity, learners use common chemicals and metals to examine reactions that produce gaseous substances.

Balancing Act
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In this physics activity (page 6 of the PDF), learners will build a class 1 lever and hypothesize and test the distances two objects need to be placed from the fulcrum in order to balance.

Exploring A Hydrogel
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In this activity on page 10 of the PDF, learners develop an experiment to answer the following question: "How much water can the hydrogel in a baby diaper hold?" Use this activity to explore polymers,

Design a Grabbing Tool
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Using simple materials from around the house and recycled materials, learners will engineer a grabber device to pick up and put down objects that are at least 12 inches away.

Speedboat
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In this activity, learners build a speedboat using paint paddles, a propeller, and film canister. Learners attach a simple circuit and motor to the boat to power the propellers.

DIY Sunprints
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In this activity, learners will see how UV light affects colors over time by making their own sunprint on construction paper.

Dancing Spaghetti
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In this chemistry activity, learners use spaghetti to explore density and chemical reactions.

Production of Oxygen
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In this chemistry activity, learners use yeast and hydrogen peroxide to generate a gas (oxygen) and test some of its properties.

Earthquake Science: Soil Liquefaction
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This activity demonstrates liquefaction, the process by which some soils lose their solidity during an earthquake.

"Baseketball": A Physicist Party Trick
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This trick from Exploratorium physicist Paul Doherty lets you add together the bounces of two balls and send one ball flying.

Yeast-Air Balloons
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In this activity, learners make a yeast-air balloon to get a better idea of what yeast can do. Learners discover that the purpose of leaveners like yeast is to produce the gas that makes bread rise.

Telescope Treasure Hunt
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This hands-on astronomy activity lets learners hunt for different objects in the night sky that contribute to stellar and planetary formation, using a Treasure List.

Lung Model: Make a Lung and Diaphragm
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By building a model of a lung and diaphragm, learners discover the function of various parts of the body's respiratory system.

Production of Hydrogen
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In this chemistry activity, learners use mossy zinc (or a galvanized nail) and hydrochloric acid to generate hydrogen gas and test some of its properties.

Control a Bird’s Flight
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In this engineering design challenge, learners make a bird and then control its flight with attached strings.