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CD Spinner
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In this activity, learners create a simple “top” from a CD, marble and bottle cap, and use it as a spinning platform for a variety of illusion-generating patterns.
Touch the Spring (Lightbulb)
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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.
Pupil
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In this activity, learners explore their eye pupils and how they change.
Bronx Cheer Bulb
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In this activity, learners observe what happens when they give a light source like a neon glow lamp a "Bronx Cheer." The lights appear to wiggle back and forth and flicker when learners blow air throu
Cylindrical Mirror
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In this activity, learners create a cylindrical mirror to see themselves as others see them.
Seeing Your Retina
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In this quick optics activity, learners use a dim point of light (a disassembled Mini MagLite and dowel set-up) to cast a shadow of the blood supply in their retina onto the retina itself.
Magic Wand
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In this activity about light and perception, learners create pictures in thin air.
Hole in Your Hand
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Create an illusion where it appears that your hand has a hole in it. You'll see the results from when one eye gets conflicting information.
Look Into Infinity
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Learners use two mirrors to explore how images of images of images can repeat forever.
The Blind Spot
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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.
Stereoscope
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In this activity, learners construct a device that allows them to view 2-D images in 3-D.
See the World Through Color-Filtering Lenses
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In this activity, learners examine how colored lenses act like filters and absorb all colors of light except for the color of the lenses.
Forensic Science: Hair Sample Investigation
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This activity (on page 2 of the PDF under SciGirls Activity: Forensics) is a full inquiry investigation into how hairs from a crime scene are matched to suspects.
Mirrorly a Window
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In this activity about light and reflection, learners discover that what you see is often affected by what you expect to see.
Do Plants Need Light?
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In this food science activity, learners conduct an experiment that demonstrates the importance of light to plants.
Giant Lens
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In this activity about light and refraction, learners discover how a lens creates an image that hangs in midair.
Color Contrast
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Do you have a hard time matching paint swatches with your furniture? When you consider human perception, color is context dependent.
Science of Sunblock
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This is an activity (located on page 3 of the PDF under Stained Glass Activity) about nanotechnology making its way into everyday products, such as sunscreen, and how effective these invisible particl
How Our Environment Affects Color Vision
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In this lab (Activity #1 on page), learners explore how we see color.
Bone Stress
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In this optics activity, learners examine how polarized light can reveal stress patterns in clear plastic.