Demand: Consumer Behavior

Active learning works because demand curves and shifters are abstract concepts that become concrete when students engage with data and scenarios. The tactile and collaborative nature of these activities helps students notice patterns in how quantities change with price and other factors, which is essential for grasping the inverse relationship in the law of demand.

• Grade 11
• Canadian & World Studies
• 4 activities
• 20 min–40 min

Learning Objectives

1. Explain the inverse relationship between price and quantity demanded as stated by the law of demand.
2. Analyze how changes in consumer income, tastes, prices of related goods, expectations, and number of buyers shift the demand curve.
3. Calculate the price elasticity of demand coefficient using given price and quantity data.
4. Differentiate between elastic and inelastic demand by comparing elasticity coefficients to real-world goods and services.

Problem-Based Learning

⏱ 20 min·Pairs

Pairs: Plotting Demand Curves

Provide price-quantity data for a product like poutine. Pairs plot points, connect to form a curve, then predict quantity at a new price. Discuss the inverse relationship and label axes clearly.

Prepare & details

Explain the law of demand and its implications for consumers.

Facilitation Tip: Before beginning the Plotting Demand Curves activity, provide a sample data set on the board and model the first two points as a whole class to ensure accuracy.

Setup: Groups at tables with access to research materials

Materials: Problem scenario document, KWL chart or inquiry framework, Resource library, Solution presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management
• Relationship Skills

Problem-Based Learning

⏱ 35 min·Small Groups

Small Groups: Demand Shifters Simulation

Groups receive scenario cards (e.g., income rise, new substitute). They draw original and shifted curves on chart paper, explain direction, and present to class. Vote on most realistic shift.

Prepare & details

Analyze how non-price factors shift the demand curve.

Facilitation Tip: During the Demand Shifters Simulation, circulate with scenario cards to listen for misconceptions about movement versus shifts, and redirect groups with targeted questions.

Setup: Groups at tables with access to research materials

Materials: Problem scenario document, KWL chart or inquiry framework, Resource library, Solution presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management
• Relationship Skills

Problem-Based Learning

⏱ 40 min·Whole Class

Whole Class: Elasticity Product Sort

List Canadian goods (insulin, flights, maple syrup). Class debates and sorts into elastic/inelastic columns on board, calculates sample elasticities, and justifies with consumer behavior examples.

Prepare & details

Differentiate between elastic and inelastic demand with real-world examples.

Facilitation Tip: For the Elasticity Product Sort, assign each small group a different set of goods to reduce repetition and encourage deeper comparisons.

Setup: Groups at tables with access to research materials

Materials: Problem scenario document, KWL chart or inquiry framework, Resource library, Solution presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management
• Relationship Skills

Problem-Based Learning

⏱ 25 min·Individual

Individual: Elasticity Calculations

Students use real data from Statistics Canada on gas prices. Compute elasticity before/after a tax change, graph results, and classify as elastic or inelastic in journals.

Prepare & details

Explain the law of demand and its implications for consumers.

Facilitation Tip: Set a clear time limit of 10 minutes for the Elasticity Calculations to maintain momentum and focus.

Setup: Groups at tables with access to research materials

Materials: Problem scenario document, KWL chart or inquiry framework, Resource library, Solution presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management
• Relationship Skills

Teaching This Topic

Teachers often start with real-life examples students recognize, such as smartphone prices or coffee purchases, to make the abstract law of demand visible. It is important to emphasize that while price changes cause movement along the curve, non-price determinants cause the entire curve to shift. Avoid rushing through the difference between movement and shifts, as this is a common source of long-term confusion. Research suggests that students retain the concept better when they physically draw curves and shifters rather than just observe them.

What to Expect

Successful learning looks like students accurately plotting demand curves with correct slope directions, confidently identifying demand shifters in real-world examples, and calculating price elasticity with clear reasoning. Peer discussions should reveal thoughtful distinctions between movement along a curve and shifts of the curve itself.

Watch Out for These Misconceptions

Common Misconception

During Plotting Demand Curves, watch for students drawing the demand curve with an upward slope, confusing it with the supply curve.

What to Teach Instead

During the Plotting Demand Curves activity, ask pairs to present their graphs to the class and explicitly compare their slope direction to the supply curve examples on the board. Have them explain the inverse relationship using their data points.

Common Misconception

During Demand Shifters Simulation, watch for students describing any price change as a shift of the demand curve.

What to Teach Instead

During the Demand Shifters Simulation, provide scenario cards that include both price changes and non-price determinants. Have groups physically label each scenario as either 'movement along the curve' or 'shift of the curve' before drawing.

Common Misconception

During Elasticity Product Sort, watch for students assuming all goods have the same elasticity regardless of type.

What to Teach Instead

During the Elasticity Product Sort, require groups to justify their placement of goods using evidence from the activity cards, such as whether the good is a necessity or luxury. Have them present their reasoning to the class to reinforce the concept.

Assessment Ideas

Quick Check

After Elasticity Calculations, present students with a scenario: 'The price of movie tickets increased by 10%, and the quantity of tickets sold decreased by 15%. Calculate the price elasticity of demand. Is demand elastic or inelastic?' Review answers as a class, clarifying calculation steps and interpreting the result.

Discussion Prompt

After Demand Shifters Simulation, pose the question: 'Imagine the price of a life-saving medication doubles. What do you predict about its elasticity of demand and why? Now, consider the price of a new video game console doubling. How might the elasticity of demand differ?' Facilitate a discussion on the factors influencing these differences, using the simulation scenarios as examples.

Exit Ticket

After Plotting Demand Curves, ask students to write down one good or service they purchased recently. Then, they should identify one non-price determinant that might have influenced their decision to buy it and briefly explain how. Collect and review for understanding of demand shifters.

Extensions & Scaffolding

• Challenge early finishers to create a new scenario card that includes both a price change and a demand shifter for the group to analyze during the simulation.
• Scaffolding for struggling students: Provide a partially completed demand curve graph with labeled axes and scale to reduce cognitive load while they plot points.
• Deeper exploration: Assign students to research and present on how a cultural trend (e.g., TikTok dances) might shift demand for a specific good, linking back to tastes as a determinant.

Key Vocabulary

Law of Demand	A fundamental economic principle stating that, all else being equal, as the price of a good or service increases, the quantity demanded will decrease, and vice versa.
Demand Curve	A graphical representation showing the relationship between the price of a good or service and the quantity demanded by consumers at each price point.
Determinants of Demand	Factors other than price that can cause a shift in the demand curve, including income, tastes and preferences, prices of related goods, expectations, and the number of buyers.
Price Elasticity of Demand (PED)	A measure of how sensitive the quantity demanded of a good or service is to a change in its price, calculated as the percentage change in quantity demanded divided by the percentage change in price.
Elastic Demand	Demand that is very responsive to changes in price, meaning a small price change leads to a larger percentage change in quantity demanded (PED > 1).
Inelastic Demand	Demand that is not very responsive to changes in price, meaning a price change leads to a smaller percentage change in quantity demanded (PED < 1).