Lesson Plan

• Define supply as the quantity of a good producers are willing and able to sell at different prices, ceteris paribus.
• Explain the positive relationship between price and quantity supplied.
• Identify and describe at least three determinants of supply and how they shift the supply curve.
• Interpret a supply‑curve diagram and predict the effect of changes in determinants.
• Apply the supply concept to real‑world examples in short written responses.

• Projector and screen
• Whiteboard and markers
• Printed handout of the determinants of supply table
• Worksheet for drawing and shifting supply curves
• Sticky notes for exit‑ticket responses
• Calculators (optional)

Begin with a quick poll: “If the price of smartphones rises, what do you think happens to the amount producers sell?” Connect this to prior knowledge of demand‑price links and state the success criteria: students will be able to define supply, explain its price relationship, and list key determinants.

1. Do‑now (5') – short quiz on price‑quantity relationships to activate prior knowledge.
2. Mini‑lecture (10') – present the definition of supply, the upward‑sloping curve, and the role of “ceteris paribus”.
3. Group activity (15') – each group receives a determinant card (e.g., technology, taxes) and predicts how the supply curve shifts, then shares with the class.
4. Guided practice (10') – students complete a worksheet plotting the original supply curve and then redraw it after a specified determinant change.
5. Check for understanding (5') – think‑pair‑share questions on why higher input costs reduce supply.
6. Summary recap (5') – teacher highlights the five key take‑aways and links back to the lesson objectives.

Review the definition, the positive price‑quantity link, and the main determinants. Students write one “exit ticket” on a sticky note: name a determinant and describe its effect on supply. Assign homework to find a current news article illustrating a supply shift and prepare a brief explanation for the next class.