| Lesson Plan |
| Grade: |
Date: 03/03/2026 |
| Subject: Biology |
| Lesson Topic: Investigate and state the effect of physical activity on pulse rate. |
Learning Objective/s:
- Describe the relationship between physical activity intensity and pulse rate.
- Measure and record resting, immediate, and recovery pulse rates accurately.
- Calculate the percentage change in pulse rate and interpret the results.
- Analyse how pulse recovery reflects cardiovascular fitness.
- Communicate findings in a brief written report.
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Materials Needed:
- Stopwatch or timer
- Pulse counter or ruler for counting beats
- Skipping rope (or other moderate‑intensity exercise equipment)
- Data recording sheet / worksheet
- Pen or pencil and notebook
- Projector or whiteboard for instructions (optional)
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Introduction:
Begin with a quick discussion: why does our heart beat faster when we run? Recall that pulse rate is a simple indicator of cardiovascular activity. Today students will investigate how different intensities of exercise affect pulse rate and will be able to present their findings using a percentage‑change calculation.
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Lesson Structure:
- Do‑now (5'): Students estimate their resting pulse and record it on the worksheet (checks prior knowledge).
- Mini‑lecture (7'): Review pulse, cardiac output, and how exercise influences heart rate (use projector).
- Practical investigation (20'): Perform two activity levels (2 min skipping, 4 min skipping), measuring immediate and 1‑min recovery pulses, recording data.
- Data analysis (10'): Calculate percentage change for each level, compare trends, discuss possible errors.
- Group discussion (5'): Each group shares results and relates findings to fitness.
- Exit ticket (3'): Write one sentence stating whether the hypothesis was supported.
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Conclusion:
Summarise that pulse rate rises with increasing exercise intensity and recovers faster in fitter pupils. Highlight how the percentage change quantifies this effect. For homework, students will design a brief experiment to test another variable such as type of exercise or recovery time.
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