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Tiny Tubes
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In this activity, learners make "totally tubular" forms of carbon. Learners use chicken wire to build macro models of carbon nanotubes.

Fan Cart
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If a sailboat is stranded because there is no wind, is it possible to set up a fan on deck and blow wind into the sail to make the boat move?

Pulleys
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In this activity, learners build inexpensive pulley assemblies from pulley wheels used for sliding screen door replacement or from clothesline spreaders.

Take It From The Top: How Does This Stack Up?
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In this activity, learners explore center of gravity, or balance point, of stacked blocks.

Laser Lissajous: PVC Version
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In this activity, learners use a laser pointer and two small rotating mirrors to create a variety of fascinating patterns, which can be easily and dramatically projected on a wall or screen.

Bronx Cheer Bulb
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In this activity, learners observe what happens when they give a light source like a neon glow lamp a "Bronx Cheer." The lights appear to wiggle back and forth and flicker when learners blow air throu

Catapult
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In this activity, learners construct their own small catapults using simple materials. Learners follow visual instructions to build their launching device.

Magic Wand
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In this activity about light and perception, learners create pictures in thin air.

Whose Fault Is It?
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In this seismic simulation, learners play a "who-dunnit" game to explore earthquakes.

How Big is Small
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In this classic hands-on activity, learners estimate the length of a molecule by floating a fatty acid (oleic acid) on water.

Cup Speaker
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Make your own speaker with a magnet, wire, and paper cup! If you have a radio with a headphone plug and an old pair of headphones, this is a great tinkering activity.

Straw Oboe: Two lips make sound
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Oboes's unique sound originates from the two small reeds a musician blows into. Make your own double reed instrument out of straw!

Gel Electrophoresis
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In this activity, learners simulate the process of DNA fingerprinting by using electricity to separate colored dyes.

Designer Ears: Make “better” ears!
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Find out what it would be like to have ears shaped differently from your own! Design and make different animal ears then try them out.

Critical Angle
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In this optics activity, learners examine how a transparent material such as glass or water can actually reflect light better than any mirror.

Short Circuit
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In this activity about electricity, learners explore what happens when you blow a fuse.

Uncanny Motion
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In this activity, learners explore motion and airflow by setting two aluminum cans on their side and blowing air in-between them.

Glow Up
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In this activity, learners explore chemiluminescence and fluorescence. Learners examine 3 different solutions in regular light, in the dark with added bleach solution, and under a black light.

Evolution in Plane Sight
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In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes.

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.