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Crystal Packin' Mama
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In this activity, learners investigate the basic crystal structures that metal atoms form.

Feel the Heat
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In this design challenge activity, learners design and build a solar hot water heater. Their goal is to create a heater that yields the highest temperature change.

That's the Way the Ball Bounces: Level 2
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In this activity, learners prepare four polymer elastomers and then compare their physical properties, such as texture, color, volume, density, and bounce height.

Build A Dome
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In this activity, learners explore the structural strength of triangles by creating their own free-standing geodesic dome out of plastic straws.

Composites
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In this activity, learners explore how composites work by creating and testing their own composite for an imaginary company.

How Many Pennies?
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In this activity (pages 13-14), learners investigate the properties of smart materials, which are materials that respond to things that happen around them.

Coffee-Can Cuíca
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Make a cuíca (“kwee-ka”), a traditional Brazilian musical instrument that originated in Africa. Played primarily in Brazil, now you can play it at home, too, with this Exploratorium produced activity.

Bet the Farm
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This is an online game about the complexities of farming. Learners will "draw" cards and make decisions about how to take care of their farm.

Investigating the Uses of Backyard Bacteria
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The purpose of this lab is to recognize that the answers to some of society's industrial challenges may lie right in our own backyards.

Card Flip Magic: Error Detection & Correction
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This magic trick is based on how computers detect and correct data errors.

Pop Rockets
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Learners place water and part of an antacid tablet in a film canister. The reaction creates a gas reaction that launches the film canister like a rocket.

Making Metals Strong
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In this activity, learners demonstrate the effects of cold-working (strain-hardening) and annealing. Learners discover that these processes change the load that a wire can support.

There's Always Room For JELL-O
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In this activity, learners cut wells in JELL-O© and load the wells with different detergent solutions.

Stem Cell Differentiation Game
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This game uses a modified Uno deck to review concepts related to stem cell research and diabetes.

The China Hammer Mystery
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In this activity, learners are asked to examine the differences between two materials in a pair.

Topographic Investigation: Map an Underwater Surface
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In this activity, learners create a map of a hidden surface using a "sounding stick" -- a technique similar to how underwater maps were once made.
Dowels and Rubber Bands I
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If you have 3-foot dowels and rubber bands, you can can started on this fun and open design challenge. You can make structures big and small: make it so you can fit your parent into it!

Pendulum Time
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In this activity, learners explore how the pendulum has been a reliable way to keep time for centuries.

Arduino Blink Challenge
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In this activity, learners explore computer programming and the impact of computers on society. Learners build and test a program to turn a light on and off using an Arduino board.

Chair Lift Challenge
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In this activity, learners explore the unique challenges in transportation engineering, such as devising a method for skiers or hikers to get to the top of a mountain.