Lesson Plan

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Lesson Plan
Grade: Date: 17/01/2026
Subject: Economics
Lesson Topic: Drawing and interpretation of equilibrium using demand and supply curves
Learning Objective/s:
  • Describe the law of demand and the law of supply and represent them graphically.
  • Calculate equilibrium price and quantity using linear demand and supply equations.
  • Analyze how shifts in demand or supply affect equilibrium and interpret the new equilibrium.
  • Construct and label accurate demand‑supply diagrams showing equilibrium points.
Materials Needed:
  • Whiteboard and markers
  • Projector with PowerPoint slides
  • Graph paper or digital graphing tool
  • Worksheets with practice equations
  • Calculator
  • Ruler
 Introduction:
Begin with a quick real‑world example of a product whose price recently changed, asking students what might cause that shift. Review the basic shapes of demand and supply curves from previous lessons. Explain that today they will draw the curves, find the equilibrium mathematically, and predict the impact of shifts.
Lesson Structure:
  1. Do‑now (5') – Short quiz on the law of demand and supply.
  2. Mini‑lecture (10') – Review linear demand and supply equations and derive the equilibrium formula.
  3. Guided practice (12') – Solve the worked example together, finding P* and Q* on the board.
  4. Interactive activity (15') – In pairs, students receive shift scenarios, redraw the curves, locate the new equilibrium and explain the change.
  5. Check for understanding (8') – Clicker questions to assess identification of shifted curves and predicted price/quantity direction.
  6. Summary & reflection (5') – Students complete a checklist confirming mastery of key points.
Conclusion:
Summarise how equilibrium is determined and how shifts move the equilibrium price and quantity. Have students write an exit‑ticket answer describing a recent news story that illustrates a demand or supply shift. Assign homework to practice drawing and solving three new equilibrium problems.