character: Techno Toby
topic: Introduction to Sound Waves
grade: 3
subject: Computer Science
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character: Robo Roxy
topic: Understanding Vibrations
grade: 3
subject: Computer Science
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character: Sonic Sam
topic: Types of Sound Waves
grade: 3
subject: Computer Science
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character: Gadget Gary
topic: How Sound Travels
grade: 3
subject: Computer Science
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