character: Captain Float
topic: Understanding Density and Buoyancy
grade: 4
subject: Science
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character: Sir Bubbles
topic: Properties of Liquids
grade: 4
subject: Science
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character: Professor Sink
topic: Exploring Water Resistance
grade: 4
subject: Science
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character: Dante the Diver
topic: Underwater Pressure and Density
grade: 4
subject: Science
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