Canadian & World Studies · Grade 11 · Economic Theory and the Market · Term 3

Demand: Consumer Behavior

Analyzing the law of demand, determinants of demand, and the concept of elasticity.

• Ontario Curriculum Expectations
• ON: The Individual and the Economy - Grade 11
• ON: Market Operations - Grade 11

About This Topic

The law of demand shows an inverse relationship between price and quantity demanded, holding other factors constant. Students plot demand curves using data on goods like coffee or smartphones, noting the downward slope. They identify determinants that shift the curve: changes in income, tastes, prices of related goods, expectations, or buyer numbers. For example, a rise in Ontario minimum wage shifts demand right for normal goods.

Price elasticity quantifies responsiveness: elastic demand sees large quantity changes from price shifts (luxuries like concert tickets), inelastic sees small changes (essentials like housing). Students calculate coefficients and apply to Canadian contexts, such as elastic demand for Tim Hortons donuts versus inelastic for gasoline amid carbon taxes.

This topic aligns with Ontario's Grade 11 standards on market operations and individual economy roles, fostering analysis of consumer choices. Active learning benefits it through interactive simulations where students adjust variables on shared graphs, making shifts and elasticity tangible and revealing how personal decisions shape markets.

Key Questions

1. Explain the law of demand and its implications for consumers.
2. Analyze how non-price factors shift the demand curve.
3. Differentiate between elastic and inelastic demand with real-world examples.

Learning Objectives

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

Before You Start

Introduction to Supply and Demand

Why: Students need a foundational understanding of the basic concepts of supply and demand and their interaction in a market before analyzing the law of demand and its determinants.

Basic Economic Principles

Why: Familiarity with concepts such as scarcity, choice, and the role of prices in allocating resources is necessary for understanding consumer behavior and demand.

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).

Watch Out for These Misconceptions

Common Misconception

The demand curve slopes upward like supply.

What to Teach Instead

Students often confuse demand with supply. Graphing paired data in pairs clarifies the inverse relationship. Peer teaching during presentations reinforces the distinction through real examples like rising apple prices reducing purchases.

Common Misconception

Any price change shifts the demand curve.

What to Teach Instead

Price changes cause movement along the curve, not shifts. Simulations with scenario cards help students practice distinguishing, as groups physically draw movements versus full shifts, building accurate mental models.

Common Misconception

All goods have the same elasticity.

What to Teach Instead

Elasticity varies by good type. Sorting activities in whole class debates expose this, with students justifying choices using necessities versus luxuries, deepening understanding through evidence-based arguments.

Active Learning Ideas

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.

20 min·Pairs

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.

35 min·Small Groups

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.

40 min·Whole Class

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.

25 min·Individual

Real-World Connections

• Retail buyers for stores like Hudson's Bay analyze the price elasticity of demand for different product categories to set sales strategies; for example, they might offer deeper discounts on elastic goods like fashion accessories to boost sales volume.
• Energy companies in Alberta monitor the inelastic demand for gasoline and natural gas when considering price adjustments, understanding that consumers will likely continue purchasing these essentials even with moderate price increases due to carbon taxes or market fluctuations.
• Marketing professionals for tech companies like Apple assess how changes in consumer income affect demand for their products, recognizing that higher-priced items like iPhones may have more elastic demand during economic downturns.

Assessment Ideas

Quick Check

Present students with a scenario: 'The price of movie tickets increased by 10%, and the quantity of tickets sold decreased by 5%. Calculate the price elasticity of demand. Is demand elastic or inelastic?' Review answers as a class, clarifying calculation steps.

Discussion Prompt

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.

Exit Ticket

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.

Frequently Asked Questions

What are the main determinants of demand?

Determinants include income levels, consumer tastes, prices of substitutes or complements, buyer expectations, and population size. In Ontario, examples include higher incomes boosting electric vehicle demand or a flu outbreak shifting tissue demand right. Teach by linking to local news; students track one determinant weekly to see curve shifts in action.

How do you differentiate elastic and inelastic demand?

Elastic demand has coefficient absolute value over 1 (quantity changes more than price, e.g., beach vacations). Inelastic is under 1 (e.g., Toronto transit fares). Use Canadian data like housing (inelastic due to necessity) versus streaming services (elastic). Calculations and debates help students apply thresholds to predict consumer responses.

How can active learning help students understand demand concepts?

Active approaches like curve-shifting simulations and product debates make abstract ideas concrete. Students manipulate graphs in groups, debate elasticity for familiar goods, and role-play consumer choices, leading to 25% higher retention per studies. This builds confidence in analyzing real markets, aligning with Ontario inquiry-based standards.

What Canadian examples illustrate the law of demand?

Tim Hortons coffee: higher prices mean fewer purchases, shown in sales data. During supply chain issues, rising lumber prices cut home building demand. Students graph these from CBC reports, connecting daily observations to the inverse relationship and preparing for elasticity analysis.