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    In this activity, learners conduct an experiment to test how fast they can react. Learners try to catch a piece of paper with a ruler printed on it (or a ruler) as quickly as they can. Learners...

    free Ages 6 - 11 5 to 10 minutes
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    In this optics activity, learners build a spy tool to secretly view things over walls or around corners. Learners discover that the mirrors inside the periscope reflect light to help you see what&...

    $5 - $10 per student Ages 6 - 11 10 to 30 minutes
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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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    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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    This activity is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Learners look through two cups with small holes in them to...

    1 cent - $1 per group Ages 6 - adult 5 to 10 minutes
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    In this artistic activity, learners blow up a smaller picture into a larger one, by using a grid. The activity prompts students to think about how their eyes and brain work together to make sense...

    1 cent - $1 per group Ages 6 - 11 30 to 45 minutes
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    In this activity, learners make an optical illusion toy from the 1800s to explore persistence of vision. When you spin the Thaumatrope, the pictures move so quickly that your eyes and brain can&...

    $1 - $5 per student Ages 6 - 11 5 to 10 minutes
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    During this hands-on activity, learners are briefly exposed to moviemaking and animation, when they create their own thaumatropes. Participants draw two different images which appear as one, when...

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