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Showing results 141 to 160 of 398
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"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.
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Pie-Pan Convection
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It's difficult to see convection currents in any liquid that's undergoing a temperature change, but in this Exploratorium Science Snack, you can see the currents with the help of food coloring.
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Standing in the Shadow of Earth
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This fun and simple hands-on astronomy activity demonstrates the shadow of the Earth as it rises as a dark blue shadow above the eastern horizon.
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Glass and Mirrors: An Inside Look at Telescopes
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This hands-on astronomy activity allows you to create a “cutaway” telescope to clearly show how reflector and refractor telescopes work.
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Where Was That?
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In this activity (9th activity on the page), learners work in pairs to see how their perception of touch differs from reality.
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Macromodel of Microarray
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This is an educator-led demonstration of microarray technology using a model created from a pizza box and ping-pong balls.
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Finger Reading
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In this activity (10th activity on the page) about the sense of touch, learners make Braille letters out of cork or cardboard and map pins.
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The Model Neuron
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In this activity, learners create a model of a neuron by using colored clay or play dough. Learners use diagrams to build the model and then label the parts on a piece of paper.
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Chemical Breath
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This is a chemistry lab activity about solutions (page 7 of the PDF). Learners see firsthand how chemicals in a solution can combine to form an entirely different substance.
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Pulse of Life: Measure Your Pulse
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In this activity, learners take their own pulse and explore how heart rate is affected by various activities.
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Magnification vs. Resolution: Can you see the flag on the Moon?
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This fun and simple hands-on astronomy activity lets learners explore the difference between telescope magnification and resolution.
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A Mole of Gas
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In this two-part activity, learners use everyday materials to visualize one mole of gas or 22.4 liters of gas. The first activity involves sublimating dry ice in large garbage bag.
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Size and Distance
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In this activity about depth perception, learners create an optical illusion in a shoe box.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-414.jpg?itok=WJIcq4Y_)
Gumdrop Chains and Shrinky Necklaces
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In this activity, learners thread gumdrops together to make a model of a polymer.
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Don't Be Nerve-ous
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In this activity, learners discover a brain process called habituation.
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Chemistry Is Colorful
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In "Chemistry is Colorful" learners explore different materials through paper chromatography.
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Fish Wheels
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In this activity, learners cut out and assemble wheels to explore how variations in fish body structures (mouth shape/position/teeth, body shape, tail shape, and coloration patterns) allow fish to sur
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Chain Reaction II
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In this hands-on activity, learners use an assortment of (mainly household) items to complete Rube Goldberg-type challenges.
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Test Density with a Supersaturated Solution
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Learners create three solutions with different levels of salinity. They compare the density of these solutions by coloring them and layering them in a clear plastic cup and in a soda bottle.
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Hanford at the Half-Life Radiation Calculator
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This quiz lets you estimate your annual radiation exposure.