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Showing results 281 to 300 of 1908

Animal House
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The goal of this activity is to design, build and test a house or toy for an animal.

Bounce vs. Thud Balls
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Learners compare the properties of two balls that appear identical. One ball bounces, while the other ball "thuds." The “bounce” ball is made of the polymer polybutadiene (-C4H4-).

It's a Gas, Man
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In this activity, learners discover if carbon dioxide has an effect on temperature.
Leaves: Extracting Pigments
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In this fun, hands-on autumn activity, learners experiment to discover whether the colored substances in leaves can be separated from the leaves.

Make a Garbage Bag Kite
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Make a kite out of a garbage bag, shower curtain, painting tarp--anything light, thin, flexible and plastic!

Instant Ice Cream
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In this activity, learners make instant ice cream without using a freezer.

Aluminum-Air Battery: Foiled again!
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Construct a simple battery that's able to power a small light or motor out of foil, salt water, and charcoal. A helpful video, produced by the Exploratorium, guides you along on this activity.

Orange Pop
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In this activity, learners surprisingly pop balloons without touching them using orange peels. This Mr.

Beating Gravity
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In this demonstration, learners watch as a device drops a ball into a cup without touching the ball or cup, even though the ball and cup are virtually side-by-side.

Hidden Color Chemistry
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In this activity, learners will discover what colors are in different markers, and may be surprised at the results.

Bouncing Balloons
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In this sports-themed engineering activity, learners create super bouncy balls out of balloons. Learners brainstorm, test their designs, and share results.

Cool Hot Rod
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If you have access to a copper metal tube, this activity does a great job demonstrating what happens to matter when it's heated or cooled. This activity requires some lab equipment.

Get the Porridge Just Right
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Learners set up three different bowls, each with a different mass of oatmeal. Learners monitor the temperature of the oatmeal and find that larger masses take longer to cool.

Snow Day!
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In this activity (on pages 4-5), learners make fake snow by adding water to the super-absorbant chemical from diapers, sodium polyacrylate.

Hole in Your Hand
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Create an illusion where it appears that your hand has a hole in it. You'll see the results from when one eye gets conflicting information.
Coastal Erosion: Where's the Beach?
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Learners use beach profile data from a local beach or online data from Ocean City, Maryland to investigate coastal erosion and sediment transport.

Lagging Sound
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In this group activity, learners see and hear the speed of sound. A learner designated the "gonger" hits a gong, once every second, as the rest of the group watches and listens from a distance.

Twirling in the Breeze
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In this engineering activity, learners build a device (an anemometer) to measure how fast the wind is blowing.

Big Wave
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This is an activity about waves. Using marbles, paper clips and rubber bands, learners explore how waves behave.

Bouncy Egg
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In this activity, learners explore how acids can dissolve eggshells leaving behind a membrane-covered bouncy egg.