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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.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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This activity provides instructions for building a mirrored tube--a smaller and simpler version of a submarine's periscope--that lets you see around corners and over walls.

$1 - $5 per student Ages 6 - 14 10 to 30 minutes
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In this math activity, learners experiment with the concept of symmetry.

1 cent - $1 per student Ages 4 - 8 10 to 30 minutes
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In this activity, learners will explore light with reflective surfaces. Learners will make predictions and share their observations as they experiment with directing a beam of light.

$1 - $5 per group Ages 4 - adult 10 to 30 minutes
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In this activity, learners trap a thin layer of air between two pieces of Plexiglas to produce rainbow-colored interference patterns.

$1 - $5 per student Ages 8 - 18 10 to 30 minutes
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With a laser pointer and some household items, learners can create their own laser light show. They can explore diffuse reflection, refraction and diffraction.

$10 - $20 per group Ages 11 - 18 10 to 30 minutes