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Showing results 61 to 80 of 128
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.
Afterimage
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In this activity about light and perception, learners discover how a flash of light can create a lingering image called an "afterimage" on the retina of the eye.
Musical Gloves
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Put on a pair of gloves and be the conductor of your invisible orchestra!
Kinetic Sculpture: Program the Pico Cricket to Make Your Art Light Up or Spin
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Use a Pico Cricket (micro-controller) to animate your art! You can program a Pico Cricket to make your art spin, light up, or make music.
Personal Pinhole Theater
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Have you ever heard of a camera without a lens? In this activity, learners create a pinhole camera out of simple materials. They'll see the world in a whole new way: upside down and backwards!
Telescopes as Time Machines
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This fun, nighttime hands-on astronomy activity lets learners explore how long it takes for light from different objects in the universe to reach Earth.
Seeing in the Dark
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In this activity (17th on the page), learners investigate why you cannot see colors in dim light.
Critical Angle
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In this optics activity, learners examine how a transparent material such as glass or water can actually reflect light better than any mirror.
The Senses of "Unknown Creatures"
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In this activity, learners use earthworms as "unknown creatures" from the South American jungle to find out how animals use senses.
LEGO Orrery
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Use this model to demonstrate the goal of NASA's Kepler Mission: to find extrasolar planets through the transit method.
How Our Environment Affects Color Vision
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In this lab (Activity #1 on page), learners explore how we see color.
Stroboscope
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In this activity (posted on March 20, 2011), learners follow the steps to construct a stroboscope, a device that exploits the persistence of vision to make moving objects appear slow or stationary.
Exploring Materials: Graphene
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In this activity, learners investigate the properties of graphene and graphite.
Marble Mazes
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In this activity, learners create a marble maze that contains sensors. As a metal marble triggers the sensors, the Pico Cricket turns on lights or spins motors.
Moldy Jell-O
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In this laboratory activity, learners design an experiment to evaluate how environmental factors influence the growth of molds.
Exploring Ultraviolet (UV) light from the Sun
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In this outdoor activity, learners explore UV rays from the Sun and ways to protect against these potentially harmful rays.
Color Table: Color your perception
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Look at pictures through different color filters and you'll see them in a new way. People have used color filters in beautiful photography or sending secret messages.
Terrestrial Hi-Lo Hunt
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In this outdoor activity, learners search for the warmest and coolest, windiest and calmest, wettest and driest, and brightest and darkest spots in an area.
Build Your Own Hydroelectric Generator
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Learners follow directions to construct a water-powered electrical generator using a turbine made from plastic spoons.
Glow in the Dark Jello
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In this activity, learners will make homemade jello that glows under a blacklight. They will learn about quinine, an ingredient in tonic water that is fluorescent.