character: Ms. Jane Smith
topic: Introduction to Wave Properties
grade: 9
subject: Physics
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character: Mr. John Doe
topic: Understanding Sound Waves
grade: 9
subject: Physics
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character: Dr. Emily White
topic: Light Waves and Optics
grade: 9
subject: Physics
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character: Mrs. Sarah Brown
topic: Wave Behavior: Reflection and Refraction
grade: 9
subject: Physics
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