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Soap-Film Interference Model: Get on our wavelength!
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By making models of light waves with paper, learners can understand why different colors appear in bubbles.

Paint by the Numbers
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In this pencil and paper activity, learners work in pairs and simulate how astronomical spacecraft and computers create images of objects in space.

See the Light
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In this three-part activity, learners conduct simple experiments to see how light refracts and reflects, and how colors of light affect what we see.

Diffraction
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In this optics activity, demonstrate diffraction using a candle or a small bright flashlight bulb and a slide made with two pencils.

Mini Zoetrope
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In this activity (posted on March 27, 2011), learners follow the steps to construct a mini zoetrope, a device that produces an illusion of action from a rapid succession of static pictures.
What Causes Rainbows?
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In this activity, learners explore how and why rainbows form by creating rainbows in a variety of ways using simple materials. Learners create rainbows indoors and outdoors.

Spectroscope
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In this activity (posted on March 12, 2011), learners follow the steps to construct a spectroscope, a tool used to analyze light and color.

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.

Easy PEAsy Seed Germination
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In this activity, learners determine the necessary conditions for pea seed germination.

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.

Glow Up
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In this activity, learners explore chemiluminescence and fluorescence. Learners examine 3 different solutions in regular light, in the dark with added bleach solution, and under a black light.

Corner Reflector
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In this optics/mathematics activity, learners use two hinged mirrors to create a kaleidoscope that shows multiple images of an object.

Camera Projector
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In this activity (posted on March 14, 2011), learners follow the steps to construct a camera projector to explore lenses and refraction.

Convection Current
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In this activity, learners make their own heat waves in an aquarium.

Hopper Circus
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In this outdoor activity and/or field trip, learners investigate the behavior of hopping animals.

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.

What does Color have to do with Cooling?
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In this demonstration/experiment, learners discover that different colors and materials (metals, fabrics, paints) radiate different amounts of energy and therefore, cool at different rates.

Why is the Sky Blue?
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In this activity, learners use a flashlight, a glass of water, and some milk to examine why the sky is blue and sunsets are red.

Disappearing Glass Rods
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In this optics activity, learners discover how they can make glass objects "disappear." Learners submerge glass objects like stirring rods into a beaker of Wesson™ oil to explore how the principles of