Science · Year 3

Active learning ideas

The Power of Erosion

Active learning works because students often struggle to grasp the scale and speed of erosion. When they model, discuss, and observe changes, they connect abstract concepts to tangible outcomes. Simulations and role plays make invisible forces visible while addressing common fears and curiosity about sudden geological events.

• ACARA Content Descriptions
• AC9S3U02

• 20–45 min
• Pairs → Whole Class
• 3 activities

Activity 01

• Simulation Game
• 45 min · Small Groups

Simulation Game: Jelly Quake Engineering

Students build small structures using toothpicks and marshmallows on a tray of jelly. They shake the tray to simulate different earthquake magnitudes and observe which designs stay standing.

Analyze how a river's speed affects its ability to erode and transport sediment.

Facilitation Tip

For Jelly Quake Engineering, remind students to layer jelly evenly to avoid air gaps that skew results.

What to look for

Provide students with three images: a fast-flowing river carrying mud, a gentle breeze blowing sand, and a steep, rocky slope. Ask students to label each image with the primary agent of erosion (water, wind, gravity) and write one sentence explaining how it is reshaping the land.

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

Activity 02

• Role Play
• 40 min · Small Groups

Role Play: The Disaster Response Team

Assign students roles like 'Seismologist', 'Local Resident', and 'Emergency Worker'. They must work together to create an evacuation plan based on data showing a volcano is about to erupt.

Evaluate the role of gravity in causing landslides and rockfalls.

Facilitation Tip

In the Disaster Response Team role play, assign specific roles like geologist, engineer, or community leader to ensure all students participate.

What to look for

Pose the question: 'Imagine you are a scientist studying a new river valley. What signs would you look for to understand if the river is actively eroding and transporting sediment?' Guide students to discuss observations like riverbed shape, sediment size, and riverbank features.

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

Activity 03

• Gallery Walk
• 20 min · Individual

Gallery Walk: Before and After

Display satellite images of landscapes before and after a major event (e.g., a landslide or eruption). Students use sticky notes to identify three specific changes they see in the landform.

Design a model to demonstrate how coastal erosion occurs.

Facilitation Tip

During the Gallery Walk, place magnifying glasses or rulers at each station to encourage careful observation of changes.

What to look for

Ask students to draw a simple diagram showing one way erosion occurs. They should label the agent of erosion (wind, water, or gravity) and one type of material being moved (e.g., sand, soil, rocks).

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

A few notes on teaching this unit

Teachers should balance scientific accuracy with emotional safety when discussing natural disasters. Use analogies carefully, as students may overgeneralize from simplified models. Focus on patterns—like how steep slopes often trigger landslides—rather than isolated facts. Research shows students learn best when they connect science to real-world decisions, so link activities to community resilience.

By the end of these activities, students will explain how earthquakes, volcanoes, and landslides reshape the land and affect communities. They will use evidence from models, discussions, and visuals to support their ideas and correct misconceptions about rapid change.

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Watch Out for These Misconceptions

• During Jelly Quake Engineering, watch for students who assume earthquakes only happen at plate boundaries.

  After the simulation, ask students to mark the jelly’s cracks and compare them to real earthquake maps. Highlight that intraplate quakes, like Newcastle’s, can occur far from boundaries.

• During the Gallery Walk, watch for students who think all volcanoes are cone-shaped mountains.

  Point to images of shield volcanoes or calderas and ask students to sketch the variety of volcanic forms they observe.

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Methods used in this brief

• Simulation Game
• Role Play
• Gallery Walk