Canadian Studies · Grade 9

Active learning ideas

Mining: Environmental & Social Issues

Students retain more when they see science in action, and mining’s environmental and social costs are best understood through direct investigation. These activities turn textbook cases into tangible experiences where students analyze real spills, debate trade-offs, and design solutions, grounding abstract issues in concrete evidence.

• Ontario Curriculum Expectations
• Ontario Curriculum CGC1D/1P: C3.3. Analyse the social and environmental impact of a specific resource-based industry in Canada.
• Ontario Curriculum CGC1D/1P: C2.2. Describe various perspectives on the use and development of natural resources in Canada.
• Ontario Curriculum CGC1D/1P: C2.4. Describe some key resource management strategies developed by Indigenous peoples in Canada.

• 40–60 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Jigsaw
• 50 min · Small Groups

Jigsaw: Mount Polley Spill

Divide class into expert groups to research environmental, social, Indigenous, and regulatory aspects of the 2014 spill. Each group creates a summary poster. Regroup into mixed teams to share findings and propose prevention strategies. End with whole-class gallery walk.

Explain effective strategies for managing the environmental impact of mine tailings and waste.

Facilitation Tip

During the Mount Polley Spill jigsaw, assign each group a different stakeholder role (government, company, Indigenous group, environmental scientist) to ensure diverse perspectives are represented in the final analysis.

What to look for

Pose the following question to small groups: 'Imagine you are an Indigenous community leader. What are your top three concerns regarding a proposed new mine near your territory, and what specific actions would you demand from the mining company and government?'

• Understand
• Analyze
• Evaluate
• Relationship Skills
• Self-Management

Activity 02

• Mock Trial
• 40 min · Pairs

Debate Pairs: Mining Expansion

Pair students to prepare pro and con arguments for expanding a mine near an Indigenous community, using evidence on tailings risks and economic benefits. Pairs debate with another pair, then switch sides. Debrief key trade-offs as a class.

Critique the social and environmental justice issues associated with mining operations near Indigenous territories.

Facilitation Tip

For the Mining Expansion debate, provide students with a shared list of key terms (e.g., tailings, consultation, biodiversity) to keep discussions focused on substantive issues rather than rhetoric.

What to look for

Provide students with a short case study of a mining operation. Ask them to identify: one potential environmental hazard, one potential social issue for Indigenous communities, and one proposed mitigation strategy mentioned in the text.

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

Activity 03

• Mock Trial
• 60 min · Small Groups

Design Challenge: Reclamation Plan

In small groups, students design a sustainable reclamation plan for a fictional mine site, incorporating tailings stabilization, habitat restoration, and community input. Groups present blueprints and budgets. Class votes on most feasible plan.

Design a plan for sustainable mine reclamation that addresses both ecological and community needs.

Facilitation Tip

In the Reclamation Plan design challenge, require students to include a labeled cross-section diagram of their site before writing a proposal, reinforcing spatial reasoning about contamination pathways.

What to look for

On an index card, have students write: 1) One specific chemical found in mine tailings that poses an environmental risk, and 2) One reason why meaningful consultation with Indigenous communities is essential for responsible mining.

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

Activity 04

• Simulation Game
• 45 min · Individual

Simulation Game: Tailings Impact Model

Individuals build small-scale models using trays, soil, water, and safe 'contaminants' like food coloring to simulate tailings leakage. Observe and record effects on 'downstream' ecosystems over two classes. Share data in whole-class discussion.

Explain effective strategies for managing the environmental impact of mine tailings and waste.

Facilitation Tip

During the Tailings Impact Model simulation, circulate with a checklist to note which student groups test both short-term and long-term effects of leakage, not just immediate spills.

What to look for

Pose the following question to small groups: 'Imagine you are an Indigenous community leader. What are your top three concerns regarding a proposed new mine near your territory, and what specific actions would you demand from the mining company and government?'

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

A few notes on teaching this unit

Teaching this topic works best when you balance scientific rigor with ethical inquiry, avoiding either doom-and-gloom narratives or corporate greenwashing. Research shows that role-play and modeling activities increase empathy and systems thinking, but only if you structure debriefs to explicitly connect emotional responses to data. Avoid framing mining as inherently bad or good; instead, let students weigh trade-offs using evidence they collect themselves.

By the end of the unit, students should explain how tailings fail and the lasting harm they cause, evaluate arguments for and against mining expansion, and propose feasible reclamation plans that address both environmental and Indigenous concerns. Success looks like students using evidence to critique oversimplified claims and defend nuanced positions.

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Watch Out for These Misconceptions

• During the Tailings Impact Model simulation, watch for students who assume tailings ponds are static and sealed. Redirect by asking them to test what happens when rainfall or seismic activity causes overflow, and have them graph leakage over time.

  During the Mount Polley Spill jigsaw, students often claim tailings are inert after storage. Counter this by having groups map the spill’s spread over weeks using real satellite imagery, highlighting how heavy metals persist and migrate through water systems.

• During the Mining Expansion debate, students may assume Indigenous communities always gain economically from nearby mines. Interrupt this by having pairs role-play a negotiation where they must draft a benefits agreement that includes local hiring, profit-sharing, and cultural safeguards.

  During the Reclamation Plan design challenge, listen for groups that assume reclamation fully restores ecosystems. Pause their work and ask them to compare pre-mining and post-reclamation biodiversity data from a case study site, noting gaps in species recovery.

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Methods used in this brief

• Jigsaw
• Mock Trial
• Simulation Game