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In this activity, a lightbulb is placed in front of a concave mirror. The actual lightbulb is not visible to the viewer, but the viewer can see the mirror image of the lightbulb formed in space.

Over $20 per group Ages 8 - 14 30 to 45 minutes
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In this optics activity, learners explore how light bends and affects what we see.

1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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In this activity related to the famous "Stroop Effect," learners explore how words influence what we see and how the brain handles "mixed messages." Learners read colored words and are asked to say th

free Ages 8 - 18 10 to 30 minutes
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In this activity, learners construct a device that allows them to view 2-D images in 3-D.

Over $20 per student Ages 6 - 11 1 to 2 hours
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This is a quick activity/demonstration that introduces learners to the concept of index of refraction. Learners place stirring rods in a jar of water and notice they can see them clearly.

1 cent - $1 per group Ages 8 - 18 Under 5 minutes
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In this optics activity, learners use paint thinner to make a small jar seem to disappear inside a larger jar.

1 cent - $1 per student Ages 8 - 14 Under 5 minutes
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In this activity about light and reflection, learners use a special device called a Mirage Maker™ to create an illusion.

Over $20 per student Ages 8 - 14 5 to 10 minutes
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In this optics activity, learners create flip books by drawing an image like an eye opening and closing on 24 small pages of paper.

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners play with a fuzzy-colored dot that has no distinct edges seems to disappear. As learners stare at the dot, its color appears to blend with the colors surrounding it.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes
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In this optics activity, learners conduct an experiment to find out why two eyes are better than one!

free Ages 6 - 11 10 to 30 minutes
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During this hands-on activity, learners are briefly exposed to moviemaking and animation, when they create their own thaumatropes.

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

1 cent - $1 per student Ages 8 - 18 Under 5 minutes
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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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In this optics activity, learners use water to make a coin "appear" and "disappear." Use this activity to demonstrate how light refracts and introduce light as waves.

1 cent - $1 per student Ages 6 - 11 Under 5 minutes
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Design and create an optical illusion toy that makes two pictures appear to become one. This is called a thaumatrope and will allow the learner to investigate the phenomenon of persistence of vision.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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This activity is a fun way to show two stages in a Monarch butterfly's life cycle. Learners will create an optical illusion that can be flipped from caterpillar to butterfly.

1 cent - $1 per student Ages 4 - 8 10 to 30 minutes
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In this activity, learners explore how pictures change in curved mirrors. Learners make cylindrical mirrors by wrapping Mylar around soda cans.

$1 - $5 per student Ages 11 - 14 45 to 60 minutes
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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.

1 cent - $1 per student Ages 4 - 11 5 to 10 minutes
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In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners.

1 cent - $1 per student Ages 6 - 11 Under 5 minutes
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In this activity, learners use a simple trick of perspective to dress friends in tiny cutout clothing. Learners make tiny pants out of card stock and tape them to the end of a stick.

1 cent - $1 per group Ages 6 - 18 5 to 10 minutes