character: Knuckles
topic: Understanding Machine Maintenance to Prevent Vibrations
grade: 3
subject: Computer Science
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character: Tails
topic: Basic Principles of Machine Operation
grade: 3
subject: Computer Science
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character: Sonic
topic: Introduction to Engineering and Design
grade: 3
subject: Computer Science
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character: Amy
topic: The Importance of Maintenance in Everyday Machines
grade: 3
subject: Computer Science
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