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Create 3D glasses and use them to explore color, light and optics. Fool your brain into 'seeing' three dimensions on a flat surface!
CD SpinnerAdd to list Details
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.
Our Sense of Sight: Color VisionAdd to list Details
In this activity, learners investigate color vision as well as plan and conduct their own experiments.
Pinhole ViewerAdd to list Details
In this activity, learners discuss and investigate how cameras, telescopes, and their own eyes use light in similar ways.
Blind SpotAdd to list Details
In this activity, learners conduct a simple test to find their blind spot.
Seeing Your RetinaAdd to list Details
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 WandAdd to list Details
In this activity about light and perception, learners create pictures in thin air.
Far-Out CornersAdd to list Details
Are there boxes, is this an illusion, or is this real life Q-bert? Illusions are always fun to build especially when you can build them.
See It to Believe It: Visual DiscriminationAdd to list Details
In this activity (12th on the page), learners investigate their ability to discriminate (see) different colors.
Dark AdaptationAdd to list Details
In this activity (6th on the page), learners investigate how photoreceptors in the eye (rods and cones) "adapt" to low light conditions.
Measuring Your Blind SpotAdd to list Details
In this activity, learners calculate the width (horizontal diameter) of the blind spot on their retina. Learners make a blind spot tester using a piece of notebook paper.
Depth SpinnerAdd to list Details
Experience a spinning spiral...you won't be hypnotized, but you'll see what happens when you look away. It's like getting off a merry-go-round and everything keeps moving.
The Blind SpotAdd to list Details
In this activity (1st on the page), learners find their blind spot--the area on the retina without receptors that respond to light.
StereoscopeAdd to list Details
In this activity, learners construct a device that allows them to view 2-D images in 3-D.
KaleidoscopeAdd to list Details
In this activity, learners build inexpensive kaleidoscopes using transparency paper and foil (instead of mirrors).
See the World Through Color-Filtering LensesAdd to list Details
In this activity, learners examine how colored lenses act like filters and absorb all colors of light except for the color of the lenses.
Bird in the CageAdd to list Details
In this activity about afterimages, learners explore what happens when receptor cells called cones in your eye's retina get tired.
Fading DotAdd to list Details
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.
In this activity, learners construct an indoors obstacle course and discover how using an eye patch can help them complete the course in the dark.
Our Sense of Sight: Eye Anatomy and FunctionAdd to list Details
In this activity, learners investigate the sense of sight and develop and conduct their own experiments.