Science · Grade 10

Active learning ideas

Impacts on Ecosystems and Biodiversity

Active learning helps students connect abstract climate data to real ecological consequences, making invisible processes visible and tangible. When students manipulate maps, debate scenarios, and construct models, they move from passive awareness to deeper understanding of how ecosystems respond to change.

• Ontario Curriculum Expectations
• HS-ESS3-5
• HS-LS2-7

• 35–50 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Jigsaw
• 50 min · Small Groups

Jigsaw: Climate Impacts

Divide class into expert groups on temperature shifts, migration disruptions, ocean acidification, and biodiversity loss. Each group analyzes provided data sources and creates a summary poster. Groups then teach their topic to new mixed groups, followed by a whole-class synthesis discussion.

Analyze how rising global temperatures affect species distribution and migration patterns.

Facilitation Tip

During Jigsaw Research, assign groups a specific ecosystem impact (e.g., coral bleaching, forest migration) and provide curated data sets so all students contribute equally.

What to look for

Present students with a graph showing rising global temperatures and a separate graph showing the migration patterns of a specific bird species over the same period. Ask: 'Based on these graphs, what is one observable relationship between temperature and species migration?'

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

Activity 02

• Case Study Analysis
• 35 min · Pairs

Data Mapping: Species Shifts

Provide maps and datasets on species ranges before and after climate shifts. Pairs plot changes using colored markers or digital tools, identify patterns, and predict future distributions. Share findings in a gallery walk.

Predict the consequences of ocean acidification on marine ecosystems.

Facilitation Tip

For Data Mapping, pre-load temperature and species range data into a GIS tool so students focus on pattern recognition rather than technical setup.

What to look for

Pose the question: 'Imagine you are advising a coastal community facing rising sea levels and increased storm intensity due to climate change. What are two key ecosystem services they might lose, and why are these losses significant?'

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

Activity 03

• Case Study Analysis
• 45 min · Small Groups

Debate Simulation: Extinction Scenarios

Assign roles as scientists, policymakers, or stakeholders. Small groups prepare arguments on whether rapid climate change will cause mass extinctions, using evidence cards. Hold a structured debate with rebuttals and vote on best-supported position.

Evaluate the potential for mass extinctions due to rapid climate change.

Facilitation Tip

In Debate Simulation, assign roles with clear scientific evidence so students practice using data to defend positions rather than relying on opinions.

What to look for

Students receive a card with a marine organism (e.g., oyster, coral, plankton). They must write one sentence explaining how ocean acidification directly impacts this organism and one sentence describing a potential consequence for the broader marine food web.

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

Activity 04

• Case Study Analysis
• 40 min · Small Groups

Model Building: Food Web Disruptions

In small groups, construct physical or digital food webs for a marine ecosystem. Introduce climate change variables like acidification and observe chain reactions by removing or altering species. Discuss resilience strategies.

Analyze how rising global temperatures affect species distribution and migration patterns.

Facilitation Tip

When building Food Web Models, provide a limited set of organisms and arrows first, then let students expand the network based on their research findings.

What to look for

Present students with a graph showing rising global temperatures and a separate graph showing the migration patterns of a specific bird species over the same period. Ask: 'Based on these graphs, what is one observable relationship between temperature and species migration?'

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

A few notes on teaching this unit

Start with concrete phenomena students can observe, like shell dissolution in acidification experiments, before introducing global climate models. Avoid overwhelming them with climate science first; focus on observable ecosystem changes. Research shows students grasp complexity better when they build explanations from evidence, not from lectures on greenhouse gases.

Students will explain how climate change affects biodiversity through measurable shifts in species ranges, food web disruptions, and habitat loss. They will justify claims with data and model outcomes, not just repeat general statements about environmental harm.

---

Watch Out for These Misconceptions

• During Jigsaw Research, watch for students who assume climate change only harms polar animals like polar bears.

  Ask groups to compare their assigned ecosystems to polar regions, using the provided data to identify other impacted habitats like coral reefs or temperate forests.

• During Data Mapping, watch for students who believe species can quickly adapt or migrate to escape impacts.

  Have students overlay migration barriers (e.g., cities, highways) onto their species range maps to visualize limitations in movement.

• During Model Building, watch for students who think ocean acidification has little effect on food chains.

  Provide shell samples for dissolution observations, then require students to trace how plankton loss affects their food web model's stability.

---

Methods used in this brief

• Jigsaw
• Case Study Analysis