Lesson Plan

• Describe the components of the mammalian circulatory system and their primary functions.
• Explain the concept of closed double circulation and differentiate the pulmonary and systemic circuits.
• Trace the pathway of blood through the heart, arteries, arterioles, capillaries, venules and veins.
• Compare structural differences between arteries, arterioles, capillaries, venules and veins.

• Projector and screen
• Printed schematic handouts of the double circulatory system
• Heart model (plastic or 3‑D printed)
• Worksheet for labeling and short‑answer questions
• Coloured markers
• Kahoot or similar quiz platform for the do‑now

Begin with a quick “city‑traffic” analogy to spark curiosity about how blood moves through the body. Prompt students to recall what they already know about organ systems and transport in cells. Clearly state that by the end of the lesson they will be able to label a circulatory diagram and explain the complete blood‑flow pathway.

1. Do‑now (5') – Kahoot quiz reviewing basic organ‑system concepts to activate prior knowledge.
2. Teacher input (10') – Slide presentation defining a closed system, double circulation, and key vessel types.
3. Diagram labeling activity (10') – Students label printed schematics of the heart and vessels, working individually.
4. Guided walkthrough (10') – Using the heart model, the teacher demonstrates the blood pathway, asking probing questions.
5. Group discussion (5') – Compare and contrast arteries vs. veins and discuss why structure matches function.
6. Check for understanding (5') – Exit ticket: write, in one sentence, the sequence of blood flow through the double circuit.

Summarise the closed double‑circulation concept and the role of each vessel type. Collect the exit tickets to gauge understanding, and assign the worksheet for homework to reinforce labeling and pathway sequencing.