character: Wavy Willy
topic: Understanding Wave Properties
grade: 9
subject: Physics
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character: Wave Wanda
topic: Properties of Mechanical Waves
grade: 9
subject: Physics
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character: Frequency Freddy
topic: Understanding Frequency and Wavelength
grade: 9
subject: Physics
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character: Amplitude Annie
topic: Amplitude and Wave Energy
grade: 9
subject: Physics
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