character: Johnny
topic: Fun Ways to Improve Cardiovascular Endurance
grade: 4
subject: Physical Education
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character: Johnny
topic: Jump Rope Challenges for Heart Health
grade: 4
subject: Physical Education
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character: Johnny
topic: Relay Races That Boost Your Heart Rate
grade: 4
subject: Physical Education
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character: Johnny
topic: Games for Building Endurance: Capture the Flag
grade: 4
subject: Physical Education
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