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Finding the Sweet Spot
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In this activity, learners will discover how to find the "sweet spots" on a baseball bat. Whenever an object is struck, it vibrates in response.
Floating Paperclip and Other Surface Tension Experiments
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In this activity, learners experiment with surface tension using everyday household items such as strawberry baskets, paperclips, liquid dish soap, and pepper.
Fog Chamber
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In this weather-related activity, learners make a portable cloud in a bottle.
Inverse Square Law
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In this math activity related to light, learners explore why a light, such as a candle or a streetlight, looks dimmer the farther away from it we get.
Geyser
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This Exploratorium activity can be used in many contexts because geysers are great opportunities for learning about heat and temperature changes as well as geological/space science phenomena.
Playground Patterns of Cracks
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In this math activity, learners observe and sketch cracking patterns in pavement.
Polarized Sunglasses
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In this activity, learners explore how polarizing sunglasses can help diminish road glare.
Make a Salt Volcano (Lava Lite)
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This activity about density provides instructions for making a miniature "lava lite" with just salt, oil, water, and food coloring.
Handy Measuring Ratio
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In this activity, learners use their hands as tools for indirect measurement.
Penny Battery
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In this activity, learners light an LED with five cents. Learners use two different metals and some sour, salty water to create a cheap battery.
Electroscope
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In this activity about electricity, learners suspend pieces of tape from a straw to construct an electroscope, a device that detects an electrical charge.
Pictures From Light
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Did you know that using a lens one can bend light to make pictures of the world? It's true!
Making Naked Eggs: Eggs Without Shells
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This is an activity about acid-base reactions using eggs and vinegar. Learners place eggs inside a container of vinegar and leave to soak overnight.
Wilberforce Pendulum
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In this activity, learners build a Wilberforce Pendulum, a special coupled pendulum in which energy is transferred between two modes of vibration, longitudinal ("bounce') and torsional ("twist"), on a
Bubble Suspension
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In this activity, learners observe as soap bubbles float on a cushion of carbon dioxide gas. Learners blow bubbles into an aquarium filled with a slab of dry ice.
On the Fringe (formerly Bridge Light)
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In this activity, learners trap a thin layer of air between two pieces of Plexiglas to produce rainbow-colored interference patterns.
Glitter Globe
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This activity shows learners (with adult supervision) how to make a Glitter Globe, a fabulous toy that shimmers when you shake it.
Whirling Watcher: Make a Stroboscope
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In this activity, learners make a stroboscope--a spinning disk with slits around the edge that you look through.
Magnetic Suction
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In this activity about electricity and magnetism, learners discover how a doorbell works. A coil of wire with current flowing through it forms an electromagnet that acts similar to a bar magnet.
Hoopster: An Airplane Made from Paper Hoops
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This activity provides instructions for making an aircraft that can really fly using a straw and paper hoops!