Lesson Plan

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Lesson Plan
Grade: Date: 17/01/2026
Subject: Biology
Lesson Topic: explain what is meant by homeostasis and the importance of homeostasis in mammals
Learning Objective/s:
  • Describe the concept of homeostasis and its main components (stimulus, receptor, control centre, effector, feedback).
  • Explain why maintaining stable internal conditions is essential for mammalian cell and organ function.
  • Identify at least three key homeostatic variables (temperature, blood glucose, plasma osmolality, blood pH) and the primary mechanisms that regulate them.
  • Analyse a negative‑feedback loop and predict the system’s response to a disturbance.
  • Apply knowledge to real‑world examples such as thermoregulation or glucose control.
Materials Needed:
  • Projector or interactive whiteboard
  • PowerPoint/slide deck on homeostasis
  • Handout containing the variable table and feedback‑loop diagram
  • Printed worksheets for guided practice
  • Whiteboard and markers
  • Exit‑ticket cards
 Introduction:
Begin with a quick poll: “What happens to your body when you step outside on a cold day?” Connect responses to prior learning about enzymes and cell function, then state today’s success criteria – define homeostasis, explain its importance, and illustrate feedback loops.
Lesson Structure:
  1. Do‑now (5') – Students write a brief answer to the poll question; teacher collects for a quick check.
  2. Mini‑lecture (10') – Present definition, components, and significance of homeostasis using slides and a flow‑chart diagram.
  3. Table analysis (12') – In pairs, examine the provided variable table, identify control mechanisms, and discuss consequences of imbalance.
  4. Feedback‑loop simulation (10') – Show an online animation of a negative‑feedback system; students label each part on their handout.
  5. Guided practice (8') – Worksheet activity matching scenarios (e.g., high blood glucose) to sensor, centre, and effector.
  6. Quick quiz (5') – Exit‑ticket with two short questions to assess understanding.
Conclusion:
Recap that homeostasis keeps internal conditions stable, enabling enzymes and cells to function efficiently. Ask learners to write one real‑life example of a homeostatic response on their exit ticket, and assign a brief homework task to research a disease caused by a failed feedback loop.