character: Frequency Frank
topic: The Science of Sound
grade: 3
subject: Computer Science
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character: Soundwave Sally
topic: Understanding Sound Waves
grade: 3
subject: Computer Science
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character: Echo Eddie
topic: How Echoes Work
grade: 3
subject: Computer Science
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character: Vibration Victor
topic: The Role of Vibration in Sound
grade: 3
subject: Computer Science
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