Lesson Plan

• Describe the law of demand and the main determinants of individual demand.
• Explain how individual demand schedules are aggregated to form market demand.
• Construct a market demand schedule from given individual schedules.
• Interpret how changes in demand determinants shift the market demand curve.
• Apply the concepts to solve quantitative quick‑check questions on market demand.

• Projector or interactive whiteboard
• Printed copies of individual demand tables
• Graph paper or digital graphing tool
• Worksheet for market‑demand construction exercises
• Markers and sticky notes
• Calculator

Begin with a quick poll: How many of you have ever compared the price of a favourite snack with how much you’d buy? Review the law of demand and recall that each consumer’s purchase decision depends on price and other factors. Today we will link those individual choices to the overall market demand, and you’ll know how to build a market demand schedule by the end of the lesson.

1. Do‑now (5’) – Students answer a short question on the law of demand on a sticky note; teacher collects for a quick check.
2. Mini‑lecture (10’) – Review individual demand, its determinants, and draw an individual demand curve on the board.
3. Guided practice (12’) – In pairs, students horizontally add quantities from the A‑B‑C table to complete a market demand schedule.
4. Graphing activity (8’) – Pairs plot the market demand points on graph paper or a digital tool and label the market demand curve.
5. Concept check (5’) – Whole‑class discussion of how income, substitutes, etc., shift the market demand curve; teacher elicits examples.
6. Quick‑check quiz (5’) – Individual written responses to the three quick‑check questions from the source.
7. Summary & reflection (5’) – Teacher summarises key points; students write one takeaway on a sticky note.

To wrap up, we revisited how individual demand curves combine to form the market demand curve and how shifts occur when determinants change. For exit, each student posts their sticky‑note takeaway and answers a brief exit ticket predicting the effect of an income increase on market demand. Homework: complete a worksheet constructing a market demand schedule for a new product using three given individual schedules.