Lesson Plan

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Lesson Plan
Grade: Date: 17/01/2026
Subject: Economics
Lesson Topic: meaning of the term ceteris paribus
Learning Objective/s:
  • Define ceteris paribus and explain its meaning in economics.
  • Describe why the assumption is essential for economic analysis and modelling.
  • Identify the variables that are held constant in demand analysis.
  • Apply ceteris paribus to interpret a demand‑curve shift.
  • Evaluate the limitations of the ceteris paribus assumption.
Materials Needed:
  • Projector and screen
  • Whiteboard and markers
  • Printed handout with demand‑curve diagram
  • Worksheet with practice questions
  • Calculator (optional)
 Introduction:
Begin with a quick poll asking students what “all else being equal” means in everyday language. Link this to prior knowledge of demand‑price relationships and state that today they will see why economists formalise this idea as *ceteris paribus*. Explain that by the end of the lesson they will be able to use the term accurately and recognise its limits.
Lesson Structure:
  1. Do‑now (5') – Students write a definition of ceteris paribus from memory and share with a partner.
  2. Mini‑lecture (10') – Teacher presents the formal definition, its role in modelling, and the notation using a simple demand function.
  3. Guided practice (12') – Whole‑class works through a demand‑curve shift example, identifying which determinants are held constant; students complete the worksheet.
  4. Group activity (10') – Small groups create a short economic scenario that uses ceteris paribus, then present their reasoning.
  5. Limitations discussion (8') – Class discusses the three main drawbacks of the assumption, linking back to real‑world examples.
  6. Exit ticket (5') – Students answer two rapid questions: (a) state the ceteris paribus condition for a price change, (b) name one limitation.
Conclusion:
Recap the definition, its purpose, and the key limitations highlighted today. Collect the exit tickets to gauge understanding and assign a brief homework: write a 150‑word paragraph applying ceteris paribus to a current economic issue (e.g., a policy change or market shock). This reinforces transfer of the concept beyond the classroom.