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Screaming Balloon
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In this quick activity (page 1 of the PDF under SciGirls Activity: Extreme Sounds) about sound vibrations, learners will investigate which small objects, such as coins, hex nuts, or marbles, produce t

Bee Hummer
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In this activity, learners investigate sound and vibration by making a "bee hummer"--a toy that sounds like a swarm of buzzing bees when you spin it around.

Drinking Straw Oboe
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In this quick activity (page 1 of the PDF under SciGirls Activity: Music and Sound), learners will construct an oboe-like instrument from a plastic drinking straw by cutting the end to split it into t

Straw Pipes
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Learners build pan pipes out of drinking straws by cutting them to different lengths. Then, learners make music by blowing across the straws and playing some well-known songs.

Sound Sandwich
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With a straw, two craft sticks, and some rubber bands, construct a noisemaker called a Sound Sandwich and explore how vibration produces sound.

Vocal Visualizer
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With a bit of PVC, a laser, a can/cup, and a small mirror, you can make a device that visualizes you voice or any sound transmitted into the cup/can.

Waterbottle Membranophone
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In this activity, you'll use a straw, a water bottle and a paper tube to make an instrument that's very much like a saxophone.

Good Vibrations
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This lesson (on pages 15-24 of PDF) explores how sound is caused by vibrating objects. It explains that we hear by feeling vibrations passing through the air.

Finding the Sweet Spot
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In this activity, learners will discover how to find the "sweet spots" on a baseball bat. Whenever an object is struck, it vibrates in response.

Polarized Sunglasses
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In this activity, learners explore how polarizing sunglasses can help diminish road glare.

Slide Whistle
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In this activity, learners build a slide whistle using PVC pipe, bamboo skewer, and piece of foam. Construction of the instrument is relatively simple.

Tune Booster
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In this activity, learners build unique sound enhancing inventions with items from around the house to amplify sound from their smart phone's speakers.

Wilberforce Pendulum
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In this activity, learners build a Wilberforce Pendulum, a special coupled pendulum in which energy is transferred between two modes of vibration, longitudinal ("bounce') and torsional ("twist"), on a

Torsion Drum
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In this activity, learners build a musical drum using a cardboard tube, plastic wrap, and beads.

Curie Point
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In this activity best suited as a demonstration, learners observe that when a piece of iron gets too hot, it loses its ability to be magnetized.

Cuica (Laughing Cup): Make a Musical Instrument
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In this activity, you'll use a paper cup, a piece of cloth, and some string to make a musical instrument called a cuica (pronounced KWEE-kah).

Air Cannon
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In this quick and easy activity, learners build an air cannon "drum" and see what happens when they "shoot" puffs of air at different targets.