Geography · Grade 10

Active learning ideas

Weathering, Erosion, and Deposition

Active learning helps students grasp weathering, erosion, and deposition because these processes happen over time and space students can’t easily observe. Hands-on simulations and real-world mapping make abstract concepts tangible, allowing students to see cause and effect directly in controlled and outdoor settings.

• Ontario Curriculum Expectations
• ON: Interactions in the Physical Environment - Grade 10
• CCSS.ELA-LITERACY.RST.9-10.2

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

Activity 01

• Stations Rotation
• 50 min · Small Groups

Lab Demo: Weathering Types Comparison

Supply rock samples, vinegar for chemical weathering, ice cubes for physical freeze-thaw, and moss for biological. Students expose samples over two class periods, measure mass changes, and sketch surface alterations. Groups present findings to the class, linking to local Canadian examples.

Differentiate between various types of weathering and erosion.

Facilitation Tip

For the Schoolyard Survey, provide clipboards and colored pencils so students can map evidence of weathering, erosion, and deposition with precise symbols and brief notes for each location they identify.

What to look for

Provide students with images of various landforms (e.g., a delta, a sand dune, a canyon, a moraine). Ask them to identify whether the primary process involved in its formation was weathering, erosion, or deposition, and to briefly explain their reasoning.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 02

• Stations Rotation
• 45 min · Pairs

Stream Table: Erosion and Deposition Simulation

Construct stream tables from trays with sand, soil, and pebbles. Vary water flow and slope to erode channels, then reduce flow to observe deposition. Students record before-and-after photos and predict landform changes based on energy levels.

Explain how human activities can accelerate or mitigate erosion.

What to look for

Pose the question: 'How might building a new housing development on a hillside impact the natural processes of weathering, erosion, and deposition?' Facilitate a class discussion where students consider changes to water runoff, soil stability, and sediment transport.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 03

• Stations Rotation
• 40 min · Small Groups

Schoolyard Survey: Local Processes Mapping

Students walk the school grounds to identify weathering on walls, erosion gullies, and deposition piles. They map features with sketches or apps, note human influences like paths, and propose mitigation strategies in group reports.

Analyze the impact of depositional landforms on human settlement patterns.

What to look for

Ask students to write down one example of a human activity that accelerates erosion and one example of a human activity or natural feature that mitigates erosion. They should also briefly explain why each activity has the stated effect.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 04

• Stations Rotation
• 60 min · Whole Class

Case Study Debate: Human Erosion Impacts

Divide class into teams to research Canadian cases like Niagara erosion or Athabasca oil sands. Present arguments on acceleration versus mitigation, vote on best solutions, and connect to depositional settlement benefits.

Differentiate between various types of weathering and erosion.

What to look for

Provide students with images of various landforms (e.g., a delta, a sand dune, a canyon, a moraine). Ask them to identify whether the primary process involved in its formation was weathering, erosion, or deposition, and to briefly explain their reasoning.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

A few notes on teaching this unit

Teachers find success by using short, focused demos first to build foundational understanding before moving to larger simulations or fieldwork. Avoid overloading students with too many agents at once; start with water-based erosion and gradually introduce wind and ice. Research shows students grasp sequences better when they model processes step-by-step, so use visual timelines and student-generated diagrams to reinforce the order of events.

Students should be able to distinguish between weathering, erosion, and deposition in both simulated and real-world contexts. They will explain how different agents act on materials and connect these processes to landform formation with evidence from their observations and data.

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Watch Out for These Misconceptions

• During the Weathering Types Comparison Lab, watch for students who confuse weathering with erosion because both involve rock changes.

  Ask students to focus on whether rocks are breaking in place (weathering) or moving away (erosion) during each station. Have them record whether materials stay in the container or leave it to highlight the difference.

• During the Stream Table simulation, watch for students who think erosion always destroys landscapes and never builds them.

  Pause the simulation when deposition features form, such as bars or deltas, and ask students to explain how energy loss leads to sediment settling. Use their observations to update a class anchor chart labeling both destructive and constructive outcomes.

• During the Schoolyard Survey, watch for students who believe these processes only happen over centuries.

  Have students look for recent signs of change like cracked sidewalks from frost heave or eroded soil near downspouts. Ask them to estimate how long these changes took and compare their findings to long-term processes discussed in class.

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Methods used in this brief

• Stations Rotation