character: Ruby the Reactor
topic: Everyday Chemical Changes
grade: 3
subject: Science
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character: Bill the Beaker
topic: How Mixing Chemicals Works
grade: 3
subject: Science
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character: Emma the Experimenter
topic: Observing Changes in States of Matter
grade: 3
subject: Science
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character: Sam the Scientist
topic: Identifying Physical vs Chemical Changes
grade: 3
subject: Science
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