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

Reflections
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In this quick activity, Dracula has a hole in his house and learners help solve the problem by using a mirror and protractor to reflect incoming light out of his house.

Radiohead
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When you teeth clatter, they make quite the racket disproportionately to how much they actually sound to someone else.

Shrinking Polymers
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In this activity, learners discover that some plastics will shrink when you get them hot. Learners bake polystyrene in a regular oven and discover what happens.

Eyedropper Hydrometer: Buoy your understanding of density
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Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

Personal Pinhole Theater
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Have you ever heard of a camera without a lens? In this activity, learners create a pinhole camera out of simple materials. They'll see the world in a whole new way: upside down and backwards!

Burning Issues
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Learners use a candle to investigate the products of combustion. When a glass rod is held over a lit candle, the candle flame deposits carbon on the rod.

Circles or Ovals?
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This science activity demonstrates the dominant eye phenomena. What does your brain do when it sees two images that conflict?

Chocolate (Sea Floor) Lava
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In this edible experiment, learners pour "Magic Shell" chocolate into a glass of cold water. They'll observe as pillow shaped structures form, which resemble lavas on the sea floor.

Pollution Patrol
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In this activity, learners explore how engineers design devices that can detect the presence of pollutants in the air.

Make Your Own DNA
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Learners match puzzle pieces to outlines of a DNA strand. The puzzle pieces represent the four chemicals making up DNA base pairs: adenine, thymine, guanine, and cytosine.

Heart of the Matter
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In this activity, learners explore the concept of valve operation and how engineers have adapted valves for use in mechanical heart valve design.

The Carbon Cycle Game
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In this activity, learners take on the role of a carbon atom and record which reservoirs in the carbon cycle they visit.

Smooth Operator
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In this activity, learners explore surgical instrument design. Teams of learners construct surgical instruments from everyday materials.

Balloon in a Flask
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Learners observe a flask with a balloon attached over the mouth and inverted inside the flask.

Thrush Songs: An Interactive Game
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In this interactive game, learners listen to the songs of four different thrushes and then try to match each bird with its song.

Control a Bird’s Flight
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In this engineering design challenge, learners make a bird and then control its flight with attached strings.

Air Cannon
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In this activity, learners create air cannons out of everyday materials. Learners use their air cannons to investigate air as a force and air pressure.

Carbon Cycle Poster
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In this activity, learners gain knowledge about how carbon moves through all four of the Earth’s major spheres (biosphere, hydrosphere, atmosphere, and lithosphere), and understand how humans influenc

Tube Zither
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In this activity, learners explore sound by constructing tube zithers, stringed instruments from Southeast Asia and the South Pacific.