This learning resource is focused on teaching children about heart rates and stretching exercises, specifically aimed at 10-year-olds. The document includes two main parts: the first part challenges students to calculate their Target Heart Rate (THR) based on the Maximum Heart Rate (MHR) formula, facilitating an understanding of how to maintain optimal heart rate zones during physical activity. The second part discusses the importance of stretching, differentiating between static and dynamic stretches, and providing a practical scenario related to basketball. It encourages students to reflect on the importance of stretching for muscle recovery after sports activities.