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Cardboard Opaque Projector
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In this activity, learners construct a projector out of cardboard to view their favorite images (such as storybook illustrations) on the wall.

Tune Booster
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In this activity, learners build unique sound enhancing inventions with items from around the house to amplify sound from their smart phone's speakers.

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.

Balloon Nanotubes Tabletop
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This activity introduces learners to the structure and properties of carbon nanotubes.

Helicopters
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In this activity, learners will observe how air interacts with a paper helicopter. Learners will test different variables of weight, size, and shape.

Build A Dinosaur Nest
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In this outdoor activity, learners will gather natural materials outside that they think a dinosaur would want to lay its eggs in.

Building Bridges
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In this activity, learners explore the engineering design process and the basic mechanics behind building bridges as they build one themselves using gumdrops and toothpicks.

Floating Head Cup
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In this activity, learners watch a figure "magically" float up through the air.

Design and Build a Wind Vane
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In this activity, learners design and build a simple wind vane —one of the oldest kinds of weather tools— and use it to show wind direction.
Math and Creativity Posters
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These math posters have questions written on them, such as: How many colors can you name in a minute? or How many seconds can you balance on one foot?

Stained Glass Glue
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In this activity on page 6 of the PDF, learners use glue instead of glass to create artwork that can be hung in a window.

Hoopster: An Airplane Made from Paper Hoops
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This activity provides instructions for making an aircraft that can really fly using a straw and paper hoops!

Squeezing Pictures Into Codes
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In this activity, learners will explore how computers represent pictures using pixels.

Sticky Structures
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In this engineering/design/arts and crafts activity, learners design and build "platforms" or "bridges" that can hold weight, and test which glue makes the strongest structure.

Making Paper with Fungi
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In this activity (p.24 of PDF), learners make paper with fungi. Learners discover that paper is basically a flat mat of fibers.

Double Horn
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In this activity, learners explore sound by constructing their very own instruments using PVC pipes, soda bottles, and a straw.

Lego Mania
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In this activity, learners will put together towers using building bricks, then take the tower apart and challenge themselves to use the same bricks used to build a bridge.

Marble Drop Game
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Build your own version of a favorite carnival game, in which a marble races down a maze consisting of rows of nails.

DIY Sunprints
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In this activity, learners will see how UV light affects colors over time by making their own sunprint on construction paper.

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