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Exploring Shadows
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This activity guide features three related explorations to help learners ages 3-6 investigate shadows via the following science concepts: A shadow is made when an object blocks the light; you can chan
Battling for Oxygen
Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.
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.
Underwater Hide and Seek
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In this activity, learners experience firsthand how marine animals' adaptive coloration camouflages them from prey.
Structure of Matter: Pigment vs. Iridescence
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This is an activity (located on page 3 of the PDF under Butterfly Wings Activity) about how visible light is affected by tiny nanoscale structures, producing iridescence on butterfly wings, soap bubbl
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.
Sensory Hi-Lo Hunt
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In this outdoor activity, learners use only their senses to to find the extremes of several environmental variables or physical factors: wind, temperature, light, slope and moisture.
Soap-Film Painting
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Make a big canvas of iridescent color with pvc pipe! In this Exploratorium Science Snack, you'll need to cut and assemble some PVC pipe, but the pay-off, the soap-bubble canvas, is big.
Interference in a Ripple Tank
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In this optics activity, learners explore interference by adding wax blocks to a ripple tank.
Benham's Disk
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In this optics activity, learners discover that when they rotate a special black and white pattern called a Benham's Disk, it produces the illusion of colored rings.
Spherical Reflections
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In this art meets science activity, learners pack silver, ball-shaped ornaments in a single layer in a box to create an array of spherical reflectors.
Diffraction Between Wax Blocks
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In this optics activity, learners explore diffraction by adding wax blocks to a ripple tank. The wedge-shaped blocks act as obstacles that the wave must bend around.
Anti-Gravity Mirror
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In this demonstration, amaze learners by performing simple tricks using mirrors. These tricks take advantage of how a mirror can reflect your right side so it appears to be your left side.
Gray Step
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In this activity, learners discover that it's difficult to distinguish between two different shades of gray when they aren't separated by a boundary.
Clap Sensor: Build a Sound Sensor Using a Pico Cricket
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This activity requires a Pico Cricket (tiny computer). Learners work on designing and building a sound sensor out of household materials, like plastic wrap and cardboard.
Biological Succession in a Microecosystem
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This laboratory activity helps learners understand the concept of biological succession by simulating the process in a microenvironment with various protozoans.
Canned Heat
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In this activity, learners explore how light and dark colored objects absorb the Sun's radiations at different rates.
Luminol Test
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Learners mix a solution containing luminol and copper with a fake blood solution. A chemical reaction between the luminol solution and fake blood (hydrogen peroxide) show learners a blue glow.
Stereoscope
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In this activity, learners construct a device that allows them to view 2-D images in 3-D.
Water Body Salinities I
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In this activity, learners investigate the different salinity levels of oceans, rivers and estuaries.