character: Curiosity Rover
topic: Journey of Mars Rovers
grade: 3
subject: Science
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character: Spirit Rover
topic: Exploration of Mars
grade: 3
subject: Science
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character: Opportunity Rover
topic: Mars Missions
grade: 3
subject: Science
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character: Perseverance Rover
topic: Searching for Signs of Life on Mars
grade: 3
subject: Science
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