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    BioEd
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    In this activity related to microbes, learners create scale models of microorganisms and compare relative sizes of common bacteria, viruses, fungi and protozoa using metric measures: meters,...

    1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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    New York Hall of Science
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    This is a great activity for investigating the basics of lift and drag as they pertain to flight. Learners will discover how to avoid "taking a nosedive" by building their own paper...

    1 cent - $1 per student Ages 6 - 14 10 to 30 minutes
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    New York Hall of Science
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    In this activity, learners explore density and buoyancy as they design and construct rafts. Learners must build a raft out of five craft sticks, four twist ties, four straws, and one styrofoam cup...

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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    Lawrence Hall of Science
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    No glue is needed for learners of any age to become marshmallow architects or engineers. Using marshmallows and water (and maybe edible decorations like peanut butter, pretzels, gumdrops, etc.),...

    1 cent - $1 per student Ages 4 - 14 30 to 45 minutes
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    WGBH
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    In this design challenge activity, learners build a rubber band-powered rover that can scramble across the room. Learners follow the engineering design process to design and build a rover out of...

    1 cent - $1 per student Ages 11 - 18 30 to 45 minutes
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    The University of Texas McDonald Observatory
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    In this two-part activity, learners explore the Earth and Sun's positions in relation to the constellations of the ecliptic with a small model. Then they extend to explore the motions of the...

    1 cent - $1 per group Ages 4 - 18 1 to 2 hours
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    University of Colorado Boulder
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    In this activity, learners get hands-on with geometry by making a polyhedron kitty sculpture. Several of the kitty's body parts are variations of a polyhedron called the rhombicuboctahedron -...

    1 cent - $1 per student Ages 8 - adult 10 to 30 minutes
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    University of Alaska Fairbanks
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    In this activity related to climate change, learners examine albedo and the ice albedo feedback effect as it relates to snow, ice, and the likely results of reduced snow and ice cover on global...

    1 cent - $1 per group Ages 14 - 18 45 to 60 minutes
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    Science Museum of Minnesota
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    Create airplanes from straws and geometric shapes. Test them out to see how far they can fly, or how accurately they can be aimed. All you need is a straw, two strips of paper, and some tape to...

    1 cent - $1 per student Ages 4 - 14 30 to 45 minutes
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    National Optical Astronomy Observatory
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    This is a classic exercise for visualizing the scale of the Solar System. Both the relative size and spacing of the planets are demonstrated in this outdoor exercise, using a mere peppercorn to...

    1 cent - $1 per group Ages 6 - adult 45 to 60 minutes

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