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Showing results 41 to 60 of 95
Nebula in a Jar
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In this activity, learners will build a model of a nebula using cotton balls and colored water. Astronomers photograph nebulas and add colors to provide information about the nebula's composition.
Up Periscope!
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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.
Shadow Puppets
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In this activity, learners will create their own simple shadow puppets, and experiment with light and shadow while playing with them.
Reflecting on Diffraction
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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.
Dark Adaptation
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In this activity (6th on the page), learners investigate how photoreceptors in the eye (rods and cones) "adapt" to low light conditions.
Globe at Night
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In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.
Liquid Crystals Interact with Light!
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In this two-part activity, learners explore the properties of liquid crystals, which are responsible for why mood rings change color.
Lagging Sound
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In this group activity, learners see and hear the speed of sound. A learner designated the "gonger" hits a gong, once every second, as the rest of the group watches and listens from a distance.
Big Wave
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This is an activity about waves. Using marbles, paper clips and rubber bands, learners explore how waves behave.
Shadow Dance
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In this activity, learners experiment with shadows and light sources to understand the relationship between the angle illumination and the shadow's length.
Illuminations on Rates of Reactions
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In this activity, learners investigate the speed of chemical reactions with light sticks. Learners discover that reactions can be sped up or slowed down due to temperature changes.
Exploring Structures: Butterfly
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In this activity, learners investigate how some butterfly wings get their color.
Bubble Tray
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In this activity, learners use simple materials to create giant bubbles.
What is Nanotechnology?
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In this activity related to nanotechnology, learners observe some of the effects that result from creating a thin layer of material several nanometers thick.
Cylindrical Mirror
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In this activity, learners create a cylindrical mirror to see themselves as others see them.
DIY Sunprints
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In this activity, learners will see how UV light affects colors over time by making their own sunprint on construction paper.
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.
Kaleidoscope
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In this activity, learners build inexpensive kaleidoscopes using transparency paper and foil (instead of mirrors).
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.
Fruity Electricity
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In this activity, Frankenstein's lab is running out of electricity! Learners use fruit to help Igor find a temporary source of energy to turn on a light.