character: Vibration Victor
topic: How Sound Travels
grade: 3
subject: Computer Science
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character: Sound Sally
topic: The Science of Sound Waves
grade: 3
subject: Computer Science
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character: Echo Eddie
topic: Understanding Echoes
grade: 3
subject: Computer Science
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character: Frequency Freddie
topic: Highs and Lows: Pitch in Sound
grade: 3
subject: Computer Science
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