character: Echo the Sound Scientist
topic: Understanding Sound Waves
grade: 4
subject: Science
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character: Soundy the Sound Explorer
topic: Properties of Sound Waves
grade: 4
subject: Science
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character: Wavey the Wave Master
topic: How Sound Travels
grade: 4
subject: Science
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character: Sonic the Sound Detective
topic: Sound and Frequency
grade: 4
subject: Science
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