Lesson Plan

• Describe the pathway of blood through the pulmonary circuit.
• Explain the flow of blood through the systemic circuit.
• Compare the pressures and functions of pulmonary and systemic circulations.
• Identify the major vessels and heart chambers involved in each circuit.

• Projector and screen
• Annotated diagram of double circulation (digital or printed)
• Student worksheet with labeling and comparison tasks
• Whiteboard and markers
• Coloured markers for group labeling
• Interactive quiz platform (e.g., Kahoot)
• Optional: 3‑D heart model

Begin with a quick video clip showing the heart beating twice as fast as a single‑pump system to hook interest. Ask students to recall the chambers and major vessels they studied last week. Explain that today they will see how the heart operates as two separate circuits and what success looks like – being able to trace each circuit and compare their functions.

1. Do‑now (5'): Students label a blank double‑circulation diagram on their worksheet.
2. Mini‑lecture with animated slide (10'): Explain the pulmonary circuit, highlighting deoxygenated → oxygenated flow.
3. Guided practice (8'): Students trace the pulmonary pathway on the diagram and answer a short check‑question.
4. Systemic circuit overview (10'): Show the systemic loop, discuss pressure differences.
5. Group comparison activity (10'): Teams fill a comparison table (pressure, vessels, heart chamber).
6. Whole‑class discussion & misconceptions check (7'): Review key differences and clarify errors.
7. Exit ticket (5'): Each student writes one sentence summarising how the two circuits differ.

Summarise that the heart runs two parallel circuits – pulmonary for gas exchange and systemic for delivering oxygen to the body – each with distinct pressures and vessels. Collect exit tickets as a quick retrieval check and assign the textbook section on blood pressure plus an online quiz for homework.