character: Sonic the Wave Explorer
topic: Types of Sound Waves
grade: 4
subject: Science
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character: Echo the Sound Scientist
topic: Understanding Sound Waves
grade: 4
subject: Science
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character: Wavy the Wave Wizard
topic: How Sound Travels
grade: 4
subject: Science
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character: Ripple the Resonance Ranger
topic: Different Frequencies of Sound
grade: 4
subject: Science
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