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Showing results 121 to 140 of 143
Turning the Air Upside Down: Warm Air is Less Dense than Cool Air
Learners cover a bottle with a balloon. When they immerse the bottle in warm water, the balloon inflates. When they immerse the bottle in a bowl of ice, the balloon deflates.
Ziploc Digestion Simulator
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In this biology activity, learners recreate the process of digestion in a zip lock bag. A bit of soda pop added to some crumbled crackers approximates how acids in the stomach dissolve food.
Shrinking Coin
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In this demonstration, learners attempt to get a large coin through a small hole, the size of a smaller coin.
Musical Coathanger
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In this activity, learners turn an ordinary metal coat-hanger into a (very quiet) musical instrument.
Do Sweat It!
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In this activity, learners explore why humans sweat. Learners compare the effects of heat on a balloon filled with air and a balloon filled water.
Exploring Earth: Paper Mountains
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In this activity, learners explore in what ways the shape of the land and the pull of gravity influence how water moves over Earth.
Seeing Is Believing
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This activity is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Learners look through two cups with small holes in them to simulate what it'
CANdemonium: Make a Drum Out of Recycled Cans
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With three cans and some tape, make a drum that you bonk down on any surface to produce a variety of sounds. This activity also teaches you about pitch, vibration, and frequency.
Anti-Bubbles
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In this activity, learners will be making the opposite of a bubble, an anti bubble! This low start up activity is fun, informative, and best of all-a little messy!
Exploring the Solar System: Magnetic Fields
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The "Exploring the Solar System: Magnetic Fields" activity shows participants how scientists can use tools to study the invisible magnetic fields of Earth, the Sun, and other objects in the universe.
Guess the Sentence
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In this activity, learners play a game similar to Hangman by guessing a secret phrase to understand how computer scientists measure the amount of "information" in a document.
Information Hiding: Sharing Secrets
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This activity about cryptographic techniques illustrates a situation where information is shared, and yet none of it is revealed.
Remote Control Roller: Experiment with Static Electricity
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This activity is an investigation of static electricity. What happens when you get "static cling?" Basically, you pile up electrons on one thing, which attracts the protons in something else.
Fork it Over
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This is an activity about center of gravity. Learners will balance a fork on a glass by finding its center of gravity.
Static Shock!
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In this hands-on activity, learners explore static electricity through the use of common household products. They also explore the connection between static electricity and cold weather.
The Same Names
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In this math activity, learners make and explore patterns using the letters in their names, a grid, and some colors.
Holding Charge
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In this trick, learners discover how to stick a straw to the palm of their hand, window door, or anywhere using static electricity.
Flinker
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In this activity, learners make a foam packing peanut "flink"--neither float away nor sink--in water. Learners experiment with materials to make a Flinker that "flinks" for 10 seconds.
¡Truco Con Agua!
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En esta actividad los aprendices aprenderán un truco de magia donde la magia es la presión del aire.
Telephone Talk
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In this math activity, learners find patterns in telephone numbers.