character: Sam Soundwave
topic: Travel of Sound Waves
grade: 4
subject: Science
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character: Echo the Sound Explorer
topic: How Sound Travels Through Different Mediums
grade: 4
subject: Science
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character: Wavey the Sound Scientist
topic: Vibrations and Sound Waves
grade: 4
subject: Science
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character: Buzzy the Bee
topic: Sound Waves in Nature
grade: 4
subject: Science
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