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    The Exploratorium
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    In this demonstration, amaze learners by performing simple tricks using mirrors. These tricks take advantage of how a mirror can reflect your right side so it appears to be your left side. To make...

    Over $20 per group Ages 8 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity about afterimages, learners explore what happens when receptor cells called cones in your eye's retina get tired. Learners will stare at a simple red shape, such as a bird,...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity about depth perception, learners create an optical illusion in a shoe box. By looking through the viewing hole, learners explore how they can trick their brain into thinking that...

    $1 - $5 per student Ages 6 - 18 10 to 30 minutes
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    The Exploratorium
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    In this activity about light and perception, learners create pictures in thin air. Using a simple set up of a slide projector, slide, moveable screen or poster board, and a "wand",...

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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    The Exploratorium
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    In this optics activity, learners discover that not all shadows are black. Learners explore human color perception by using colored lights to make additive color mixtures. With three colored lights...

    $5 - $10 per group Ages 6 - 18 5 to 10 minutes
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    The Exploratorium
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    In this activity, learners discover that it's difficult to distinguish between two different shades of gray when they aren't separated by a boundary. Learners will be surprised when two...

    $1 - $5 per group Ages 8 - 14 5 to 10 minutes
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    The Exploratorium
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    In this optics activity, learners discover that when they rotate a special black and white pattern called a Benham's Disk, it produces the illusion of colored rings. Learners experiment with...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    The Exploratorium
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    In this activity about light and perception, learners discover how a flash of light can create a lingering image called an "afterimage" on the retina of the eye. Learners will be...

    1 cent - $1 per student Ages 8 - 18 10 to 30 minutes