character: Ms. Sarah Lee
topic: The Principles of Refraction and Reflection
grade: 9
subject: Physics
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character: Mr. John Doe
topic: Applications of Refraction in Lenses
grade: 9
subject: Physics
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character: Ms. Emily Chen
topic: Understanding Light: Reflection vs. Refraction
grade: 9
subject: Physics
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character: Dr. Alan Smith
topic: The Science of Light: Refraction and Reflection Techniques
grade: 9
subject: Physics
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