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Kites
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In this engineering/design activity, learners make a kite, fly it, and then work to improve the design. Learners explore how their kite design variations affect flight.

File Card Bridges
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With two stacks of books and a few rolls of pennies, build two kinds of bridges--a beam span and an arch span--and see how much weight each of them can hold.

Does Size Make a Difference?
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In this activity on page 15 of the PDF, discover how materials and physical forces behave differently at the nanoscale.

Exploring the Solar System: Mars Rovers
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In "Exploring the Solar System: Mars Rovers," participants learn about how scientists and engineers use robotic rovers and other vehicles to explore distant worlds, and experience some of the challeng

Rockets Away!
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In this activity, learners work in teams to construct and test fly drinking straw rockets. Learners explore how changing the rockets' fins affect flight distance.

Paper Maker
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Learners make their own paper. They start by shredding old newspaper, clean toilet paper, and clean paper towels.

Paddle Power
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In this design challenge, learners build a boat that paddles itself using a rubber band as its power source.

Salting Out
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In this activity, learners create a mixture of water, alcohol and permanent marker ink, and then add salt to form a colored alcohol layer on top of a colorless water layer.

Art Cars
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In this activity, learners design miniature cars. Learners can create a telephone car, soccer car, merry-go-round car, or any other theme car they can imagine.

Night Lights
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In this activity, learners create night lights using a plastic cup, programmable PICO Cricket, tri-color LED, and sensor.

Push Pull Painter
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In this activity, learners create painting machines that can paint moving forwards and backwards.

Become a Neurologist: Detective Threshold
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In this neuroscience activity (4th activity on the page), learners make their own set of Von Frey hairs to test detection thresholds.

Straws and Pins
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In this activity, learners build bridges and cantilevers in a series of "building out" challenges with straws and pins.

Moving Molecules!
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In this activity about molecular diffusion (located on page 2 of the PDF under Nanosilver Activity), learners will make predictions and move molecules of iodine through a seemingly solid plastic sandw

Pot-in-Pot Refrigeration
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In this activity (on page 2 of PDF), learners create a low-tech refrigerator that requires no electricity to keep food from spoiling.

Diffusion of Water with Gummy Bears
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In this activity, learners investigate the movement of water into and out of a polymer. Learners test the diffusion of water through gummy bears, which are made of sugar and gelatin (a polymer).

On Target
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In this design challenge activity, learners modify a cup so it can carry a marble down a zip line and also drop it onto a target.

Diving Submarine
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Learners use a commercially available toy to experiment with density. They fill a chamber in the toy submarine with baking powder and release it into a tank of water.

The Awesome Game Race
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In this engineering activity, learners design their own board games.

Harvesting Chemicals from a Battery
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In this activity, learners take apart a used zinc-carbon dry cell battery.