Assess educators' ability to analyze how running, jumping, and stretching acutely affect heart rate, breathing patterns, observable energy levels, and recovery in Pre-K–Grade 2 children. Scope: identify age-appropriate baseline vitals, predict and compare magnitude/duration of physiological responses for each activity, interpret brief tables or graphs of heart-rate and breath-count data, design or critique simple, safe classroom observation/measurement protocols (e.g., pulse checks, breath counts, energy cues), and justify activity sequencing and rest recommendations based on developmental limits and safety.