character: Nikola Tesla
topic: Inventions in Electricity
grade: 3
subject: Science
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character: Thomas Edison
topic: Electrification of Cities
grade: 3
subject: Science
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character: Michael Faraday
topic: Electromagnetism
grade: 3
subject: Science
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character: George Westinghouse
topic: Alternating Current System
grade: 3
subject: Science
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