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    Astronomical Society of the Pacific
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    This fun and simple hands-on astronomy activity illustrates the path of light as it reflects off of mirrors and how this is used in telescopes. Learners will explore how a telescope works, why the...

    $5 - $10 per group Ages 6 - adult 5 to 10 minutes
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    Mount Holyoke College
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    In this two-part activity about luminescence, learners explore the chemistry that happens inside glow sticks and other light producing reactions. First, learners build a ground state model and a...

    $1 - $5 per group Ages 8 - 14 1 to 2 hours
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    The Exploratorium
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    In this activity, learners explore why the sky is blue. Learners model the scattering of light by the atmosphere, which creates the blue sky and red sunset, using a flashlight and clear glue sticks...

    $1 - $5 per student Ages 8 - 14 5 to 10 minutes
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    Optical Society of America
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    In this optics activity, learners make a lens and explore how the eye manipulates the light that enters it. Learners use a shoebox, a glass of water, and colored plastic to make essentially a model...

    1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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    NISE Network
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    In "Exploring the Universe: Exoplanet Transits," participants simulate one of the methods scientists use to discover planets orbiting distant stars. Even when a planet is too far away to...

    1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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    Oregon Museum of Science and Industry
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    In this activity (page 2 of PDF), learners play with a lens and a piece of paper to focus an image on the paper. Learners look at different things, and see how the lenses affect the image. The ...

    1 cent - $1 per student Ages 4 - 11 5 to 10 minutes
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    WGBH
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    This fun activity uses simple materials such as milk cartons and mirrors to introduce the ideas of optics and visual perception. The project is easy to do, however adult assistance may be needed to...

    $1 - $5 per student Ages 6 - 11 10 to 30 minutes