Economics · Grade 11

Active learning ideas

Pollution and Resource Depletion

Active learning helps students grasp the economic causes of pollution and resource depletion by making abstract concepts tangible. When students simulate real-world decisions, they see firsthand how self-interest leads to collective harm, which builds empathy and critical thinking about market failures.

• Ontario Curriculum Expectations
• Ontario Curriculum CIE3M: Global Economic Interdependence, E2. analyse the impact of various factors on the global economy.
• Ontario Curriculum CIE3M: Global Economic Interdependence, E2.3. analyse the economic impact of some current environmental issues (e.g., climate change, resource depletion, water shortages, pollution).
• Ontario Curriculum CIE3M: Global Economic Interdependence, E3. analyse the role of individuals and organizations in responding to global economic challenges.

• 30–60 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Simulation Game
• 45 min · Small Groups

Simulation Game: Tragedy of the Commons Fishing Game

Provide groups with 50 paper fish and a shared pond grid. Each round, students secretly choose how many to catch, then reveal and remove fish. Discuss depletion over 5 rounds and introduce regulations in later trials. Reflect on incentives driving overuse.

Analyze the economic incentives that lead to pollution.

Facilitation Tip

During the Tragedy of the Commons Fishing Game, circulate the room and ask probing questions like, 'What do you notice about your catch as more groups overfish?' to guide reflection on shared resources.

What to look for

Pose the following to students: 'Imagine you are the mayor of a town with a river that a local factory uses for waste disposal. What economic incentives does the factory have to pollute? What economic arguments could you make to convince them to reduce pollution, considering the costs to the town?'

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Activity 02

• Case Study Analysis
• 50 min · Pairs

Case Study Analysis: Analyzing a Pollution Incident

Assign real cases like the Don River cleanup. Students in pairs chart economic costs to firms, governments, and residents, graph externalities, and propose incentives for prevention. Share findings class-wide.

Explain the concept of the 'tragedy of the commons'.

Facilitation Tip

For the case study on pollution incidents, provide students with a timeline of events and costs so they can trace how pollution affects economic indicators over time.

What to look for

Provide students with a short case study, for example, overfishing in a specific ocean region. Ask them to identify: 1. What is the shared resource being depleted? 2. How does the tragedy of the commons apply here? 3. What are two potential long-term economic consequences of this depletion?

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

Activity 03

• Case Study Analysis
• 60 min · Whole Class

Policy Debate: Resource Depletion Solutions

Divide class into teams representing governments, firms, and communities. Debate cap-and-trade vs. taxes for fisheries. Each side presents economic arguments with data visuals, then vote and debrief.

Predict the long-term economic impact of resource depletion.

Facilitation Tip

In the policy debate, assign roles (e.g., factory owner, environmental regulator) to ensure students engage with diverse perspectives and economic incentives.

What to look for

On an index card, have students define 'negative externality' in their own words and provide one example of a pollution-related negative externality they have observed or read about. Then, ask them to suggest one policy that could reduce this specific externality.

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

Activity 04

• Case Study Analysis
• 30 min · Individual

Graphing Resource Trends

Individually, students plot historical data on Canadian oil or timber depletion from provided charts. Identify trends, predict future prices, and suggest economic responses in a short write-up.

Analyze the economic incentives that lead to pollution.

Facilitation Tip

When graphing resource trends, have students label axes with clear units (e.g., tons of fish caught, monetary costs) to strengthen their quantitative reasoning.

What to look for

Pose the following to students: 'Imagine you are the mayor of a town with a river that a local factory uses for waste disposal. What economic incentives does the factory have to pollute? What economic arguments could you make to convince them to reduce pollution, considering the costs to the town?'

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

A few notes on teaching this unit

Experienced teachers approach this topic by grounding abstract economic theory in concrete simulations and case studies. Avoid lecturing about market failures; instead, let students discover the dynamics through controlled experiments. Research shows that role-playing and scenario analysis help students internalize the trade-offs between short-term profits and long-term sustainability.

Successful learning looks like students explaining how negative externalities drive pollution and resource depletion, connecting these ideas to real economic costs such as healthcare expenses or lost productivity. They should also propose policy solutions that address these market failures.

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Watch Out for These Misconceptions

• During the Graphing Resource Trends activity, watch for students who assume pollution only affects the environment, not the economy.

  Use the case study data to add a secondary axis for economic costs (e.g., healthcare expenses, lost productivity) so students can see how pollution directly impacts GDP and public budgets.

• During the Tragedy of the Commons Fishing Game, watch for students who believe the tragedy applies only to natural resources like forests or fisheries.

  Have students brainstorm how the same dynamics apply to shared urban spaces, such as public transit systems or air quality, and adjust their strategies accordingly.

• During the Policy Debate: Resource Depletion Solutions, watch for students who assume technology will always solve depletion problems.

  Use the role-play to calculate the costs of overuse versus the timeline for technological solutions, forcing students to weigh immediate scarcity against future innovation.

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Methods used in this brief

• Simulation Game
• Case Study Analysis