Lesson Plan

• Describe the law of supply and how price changes affect quantity supplied.
• Draw a correctly labelled supply curve and identify movements along the curve versus shifts.
• Explain at least three factors that cause the supply curve to shift and predict the direction of the shift.
• Interpret a given supply diagram in written economic terms.

• Projector and screen
• Whiteboard and markers
• Printed worksheets with blank supply graphs
• Handout summarising factors that shift supply
• Calculator (optional)
• Sticky notes for exit tickets

Begin with a quick poll: “If the price of a product rises, what do you think happens to the amount producers are willing to sell?” Connect responses to the previously learned law of demand and state today’s success criteria – students will be able to draw and explain a supply diagram and the impact of shifting factors.

1. Do‑now (5'): Students write a short answer on how price influences quantity supplied.
2. Mini‑lecture (10'): Review the law of supply and introduce the mathematical notation Q_s=f(P).
3. Guided practice (15'): Step‑by‑step drawing of a supply curve on the board, labeling axes and the line “S”.
4. Interpretation activity (10'): Work through a table of movements (up, down, right‑shift, left‑shift) and discuss what each represents.
5. Group task (15'): Each group receives a factor (e.g., lower input costs) and sketches the resulting shift, then explains the economic reasoning.
6. Quick revision checklist & exit ticket (5'): Students complete the checklist on a sticky note and write one key takeaway.

Recap the four ways a supply diagram can change and highlight the link between factor changes and curve shifts. Collect exit tickets to assess understanding, and assign homework: complete a worksheet drawing two supply curves (one with a price change, one with a factor shift) and write brief explanations.