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    The Exploratorium
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    Which one of your eyes are dominant? Do they act independently or are they equally "in control?" This activity explores how your eyes work (or don't work) together.

    1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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    University of Washington
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    In this activity (12th on the page), learners investigate their ability to discriminate (see) different colors. Learners arrange jars, each filled with water and different amounts of food coloring,...

    1 cent - $1 per group Ages 8 - 18 5 to 10 minutes
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    University of Washington
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    In this activity (13th on the page), learners complete a simple illusion trick to see through their own hand. Learners roll up a piece of notebook paper into a tube, arrange their hands in a...

    1 cent - $1 per group Ages 8 - 18 Under 5 minutes
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    WGBH
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    In this optics activity, learners investigate afterimages. Learners draw a simple picture using a green marker, stare at it for about 30 seconds, and then look at a blank piece of paper to see an...

    1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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    WGBH
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    In this activity, learners create an optical illusion by spinning two attached cups. A round ball seems to magically appear when the cups spin.

    1 cent - $1 per student Ages 6 - 11 Under 5 minutes
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    University of Washington
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    In this activity (1st on the page), learners find their blind spot--the area on the retina without receptors that respond to light. Learners can draw their own blind spot testers, use the provided...

    1 cent - $1 per group Ages 8 - 18 10 to 30 minutes
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    WGBH
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    In this optics activity, learners build an animation tool to make mini movies. When you spin a phenakistascope, the pictures move so quickly that your eyes and brain can't separate the images....

    1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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    Miami Science Museum
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    In this activity about vision and optical illusions, learners conduct a simple test to demonstrate how our eyes create "afterimages." Learners stare at a black cardboard bat for at least...

    1 cent - $1 per student Ages 8 - 18 Under 5 minutes
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    University of Washington
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    These two activities (4th on the page) demonstrate the importance of two eyes in judging depth. In the first activity, two learners compare the accuracy of dropping objects into a cup using only...

    1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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    WGBH
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    In this optics activity, learners conduct an experiment to explore peripheral vision. Learners collect data about their ability to see shapes, colors, or letters using their peripheral vision.

    1 cent - $1 per group Ages 6 - 11 10 to 30 minutes

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