character: Billy Bubbles
topic: Chemical Reactions in Bubble Formation
grade: 3
subject: Science
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character: Billy Bubbles
topic: Understanding Gas Production in Reactions
grade: 3
subject: Science
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character: Billy Bubbles
topic: The Science of Soap Bubbles
grade: 3
subject: Science
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character: Billy Bubbles
topic: Exploring States of Matter with Bubbles
grade: 3
subject: Science
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