Global Perspectives and Local Landscapes · 6th Year

Active learning ideas

Weathering and Erosion

Active learning helps students grasp weathering and erosion by making abstract processes visible and tangible. Hands-on stations and simulations let learners observe slow geological changes in minutes, building intuition about cause and effect.

• NCCA Curriculum Specifications
• NCCA: Primary - Natural Environments
• NCCA: Primary - Rocks and Soils

• 30–45 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Stations Rotation
• 45 min · Small Groups

Stations Rotation: Weathering Processes

Prepare stations for physical weathering (freeze-thaw with ice cubes in rock cracks), chemical (vinegar on chalk and granite chips), biological (moss on stones), and control. Groups rotate every 10 minutes, measure mass loss or crack width, and sketch changes. Conclude with class share-out comparing rock responses.

Compare the effects of physical and chemical weathering on different rock types.

Facilitation Tip

During the Station Rotation, circulate with a clipboard to listen for students using terms like ‘freeze-thaw’ or ‘carbonation’ when describing their observations.

What to look for

Present students with images of different rock formations or landscapes. Ask them to identify the primary weathering process (physical or chemical) and the main erosional agent responsible for shaping the feature, justifying their answers with specific observations.

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

Activity 02

• Stations Rotation
• 35 min · Pairs

River Erosion Demo: Stream Tables

Build stream tables with sand, soil, and rocks in trays. Pour water at varying speeds to simulate erosion and deposition. Students predict, observe sediment transport, and measure channel changes before and after. Discuss water as an agent.

Explain how erosion transports weathered material across the landscape.

Facilitation Tip

For the Stream Tables, adjust the slope so water flows visibly but not too fast to obscure the erosion patterns students need to see.

What to look for

Facilitate a class discussion using the prompt: 'Imagine you are a scientist studying the Burren. What specific evidence would you look for to differentiate between the effects of physical and chemical weathering on the limestone pavement?'

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

Activity 03

• Stations Rotation
• 30 min · Small Groups

Wind Erosion Simulation: Sand Trays

Use hair dryers or fans to blow sand across trays with barriers like pebbles or vegetation. Students time transport distances and note deposition patterns. Rotate roles: observer, recorder, agent controller. Link to Irish coastal dunes.

Analyze the role of water, wind, and ice as agents of erosion.

Facilitation Tip

In the Sand Trays, demonstrate how to vary wind speed with the fan before students experiment to ensure consistent comparisons.

What to look for

Provide students with a scenario: 'A river flows through a valley containing both granite and sandstone. Describe how weathering and erosion might affect these two rock types differently as the river transports material downstream.'

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

Activity 04

• Stations Rotation
• 40 min · Pairs

Landscape Mapping: Local Features

Provide aerial photos or maps of Irish sites like Glencolumbkille. Students identify weathering/erosion evidence, label agents, and draw before-after sketches. Pairs present one feature to class.

Compare the effects of physical and chemical weathering on different rock types.

What to look for

Present students with images of different rock formations or landscapes. Ask them to identify the primary weathering process (physical or chemical) and the main erosional agent responsible for shaping the feature, justifying their answers with specific observations.

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

A few notes on teaching this unit

Teachers should emphasize the sequence: break first (weathering), then move (erosion). Use local examples to anchor abstract ideas. Avoid rushing through the vocabulary; give students time to touch, sketch, and discuss before formalizing definitions. Research shows that students retain concepts better when they connect them to familiar landscapes and repeat observations across different media.

Students will explain the difference between weathering and erosion, identify agents of each process, and link rock type to weathering rates. They will use evidence from models to justify their reasoning during discussions and written tasks.

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Watch Out for These Misconceptions

• During the Station Rotation, watch for students using the terms weathering and erosion interchangeably when describing the same station.

  Pause the group at the first station and have them write two sentences: one describing how the rock broke in place, and another describing how material moved. Share these aloud before moving to the next station.

• During the Wind Erosion Simulation, watch for students assuming water is the only agent that erodes.

  Have pairs compare their sand tray results with a partner’s stream table results, noting which agent caused more change and why. Ask them to add a third column to their data table labeled ‘Other Agents’.

• During the River Erosion Demo, watch for students assuming all rocks weather at the same rate.

  Give each group two rock samples (limestone and granite) and ask them to predict which will change faster after five minutes in the stream table. Revisit predictions after the demo and discuss differences in rock composition.

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Methods used in this brief

• Stations Rotation