Geography · Grade 7

Active learning ideas

Erosion: Shaping the Landscape

Active learning transforms abstract earth science concepts into tangible experiences. By modeling erosion with water, wind, and ice, students connect textbook definitions to real processes shaping Ontario’s landscape, building lasting understanding through observation and measurement.

• Ontario Curriculum Expectations
• ON: Physical Patterns in a Changing World - Grade 7

• 45–60 min
• Small Groups
• 3 activities

Activity 01

• Experiential Learning
• 60 min · Small Groups

Format Name: Erosion Tabletop Models

Students build small-scale landscapes using soil and sand in trays. They then simulate erosion by running water, blowing air, or using ice to observe how different agents shape the land. Observations are recorded on a worksheet.

Analyze how natural processes of erosion conflict with human land use.

Facilitation Tip

During the Stream Table Lab, circulate to ensure groups adjust slope and flow rates incrementally, recording observations every two minutes to capture cumulative change.

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

Activity 02

• Experiential Learning
• 45 min · Small Groups

Format Name: Vegetation's Role Investigation

Groups compare two soil samples, one with vegetation (e.g., grass seeds) and one without, in tilted trays. They then simulate rainfall and observe the difference in soil runoff and stability, documenting their findings.

Explain what role vegetation plays in preventing soil degradation.

Facilitation Tip

In the Wind Tunnel Demo, place a ruler along the tunnel’s side to help students measure dune height growth after each 30-second interval of wind exposure.

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

Activity 03

• Experiential Learning
• 50 min · Small Groups

Format Name: Coastal Erosion Mitigation Design

Students research different methods of coastal erosion control, such as seawalls or dune restoration. They then sketch and present a design for a hypothetical coastal area, explaining their choices.

Design strategies for humans to mitigate the impact of coastal erosion.

Facilitation Tip

For the Glacier Push Model, use a ruler to track the farthest advance of the ice block every minute, ensuring students record both distance and time for rate calculations.

• Apply
• Analyze
• Evaluate
• Self-Awareness
• Self-Management
• Social Awareness

A few notes on teaching this unit

Teachers should balance hands-on modeling with structured questioning to guide students from observation to explanation. Avoid over-explaining processes; instead, let students articulate patterns from their data. Research shows that students grasp erosion best when they connect small-scale models to real-world examples in their local environment.

Students will demonstrate mastery by explaining how agents of erosion create landforms, using evidence from models to compare rates and patterns. They will also evaluate human impacts on erosion and propose solutions grounded in their observations of natural systems.

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Watch Out for These Misconceptions

• During the Stream Table Lab, students may assume erosion only happens when water flows rapidly or overflows the tray.

  Use the stream table to measure sediment movement during steady, low-flow conditions first, then gradually increase flow to show how cumulative small changes create visible erosion over time.

• During the Wind Tunnel Demo, students may believe wind erosion only happens in deserts or during storms.

  Have students run the tunnel at consistent, moderate wind speeds for several trials, then measure the gradual buildup of dunes to show how wind sculpts landscapes continuously.

• During the Glacier Push Model, students may think glaciers only cause erosion when they advance quickly, like in videos.

  Use the model to demonstrate how even slow ice movement polishes rock surfaces over time, and have students examine the base of the ice block for scratches after each trial.

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Methods used in this brief

• Experiential Learning