character: Curiosity Rover
topic: Exploring the Surface of Mars
grade: 3
subject: Science
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character: NASA
topic: Mars Exploration Missions
grade: 3
subject: Science
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character: Rover Engineers
topic: How Rovers are Built and Operated
grade: 3
subject: Science
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character: Mars Scientists
topic: Studying Martian Geography and Climate
grade: 3
subject: Science
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