character: Sound Wave Sam
topic: Introduction to Sound Waves
grade: 6
subject: Science
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character: Frequency Fiona
topic: Properties of Sound: Frequency and Pitch
grade: 6
subject: Science
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character: Amplitude Andy
topic: Understanding Amplitude and Volume
grade: 6
subject: Science
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character: Echo Ella
topic: Sound Reflection and Echoes
grade: 6
subject: Science
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