character: Mr. Ryan Lee
topic: Blockchain Basics for Beginners
grade: 11
subject: Computer Science
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character: Ms. Sarah Kim
topic: Introduction to Cryptography
grade: 11
subject: Computer Science
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character: Mr. John Smith
topic: Understanding Smart Contracts
grade: 11
subject: Computer Science
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character: Dr. Emma Johnson
topic: The Future of Digital Currency
grade: 11
subject: Computer Science
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