Lesson Plan

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Lesson Plan
Grade: Date: 17/01/2026
Subject: Biology
Lesson Topic: outline reasons for the need to maintain biodiversity
Learning Objective/s:
  • Describe ecological stability and how biodiversity contributes to ecosystem resilience.
  • Explain the ecosystem services provided by biodiversity and their importance to humans.
  • Identify genetic, economic, moral, and scientific reasons for conserving biodiversity.
  • Evaluate the consequences of biodiversity loss for ecosystems and societies.
Materials Needed:
  • Projector and screen
  • Whiteboard and markers
  • Printed handouts with key reasons and ecosystem‑services table
  • Interactive digital quiz (e.g., Kahoot)
  • Sticky notes for exit tickets
  • Poster paper and markers for group flow‑chart activity
 Introduction:
Begin with a striking image of a coral reef before and after bleaching to hook students. Ask learners to recall the ecosystem services they depend on daily, linking prior knowledge. Explain that by the end of the lesson they will be able to outline the main reasons biodiversity must be maintained and how to communicate them.
Lesson Structure:
  1. Do‑now (5') – Students list as many ecosystem services as they can on sticky notes; share quickly.
  2. Mini‑lecture (10') – Present key reasons for biodiversity using slides and the provided table.
  3. Guided analysis (10') – In pairs, examine the handout table and match each reason to a real‑world example.
  4. Group activity (15') – Teams create a flow‑chart on poster paper linking biodiversity to services and human well‑being.
  5. Formative check (5') – Quick Kahoot quiz to assess understanding of the reasons and consequences.
  6. Exit ticket (5') – Write one reason they find most compelling and why, on a sticky note.
Conclusion:
Summarise how biodiversity underpins ecological stability, essential services, and societal values. Collect exit tickets to gauge which reason resonated most with students. Assign homework: research a local species whose loss would affect a specific ecosystem service and prepare a brief summary.