character: Coach Flex
topic: Staying Fit: Preventing Cartilage Damage
grade: 9
subject: Science
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character: Dr. Motion
topic: Understanding Joint Health and Cartilage
grade: 9
subject: Science
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character: Fitness Guru
topic: Exercises to Strengthen Cartilage
grade: 9
subject: Science
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character: Nutrition Expert
topic: Foods that Support Cartilage Repair
grade: 9
subject: Science
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