Science · Year 3

Active learning ideas

Landslides and Tsunamis

Active learning helps Year 3 students grasp landslides and tsunamis because these natural events are dynamic and complex. Hands-on activities let students see cause and effect in real time, turning abstract ideas about gravity, water, and waves into tangible experiences they can discuss and refine.

• ACARA Content Descriptions
• AC9S3U02

• 25–40 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Outdoor Investigation Session
• 35 min · Small Groups

Model Building: Landslide Slopes

Provide trays with sand layers on inclines. Students add water gradually or shake bases to trigger slides, measure slope angles with protractors, and note what stops movement. Groups sketch results and compare triggers.

Analyze the factors that contribute to the occurrence of landslides.

Facilitation Tip

During Model Building: Landslide Slopes, circulate with a spray bottle to add water gradually, asking students to predict and observe when the slope collapses.

What to look for

Provide students with two scenarios: one describing heavy rain on a steep, deforested hill, and another describing a strong earthquake under the ocean. Ask them to write one sentence explaining which event is more likely to cause a landslide and one sentence explaining how the earthquake could cause a tsunami.

• Remember
• Understand
• Analyze
• Social Awareness
• Self-Awareness
• Decision-Making

Activity 02

• Simulation Game
• 30 min · Pairs

Simulation Game: Tsunami Waves

Fill shallow trays with water over sand 'seafloors.' Students drop or slide blocks underwater to mimic quakes, observe wave travel to 'coasts,' and time flooding. Discuss wave height changes with distance.

Explain how an underwater earthquake can cause a tsunami.

Facilitation Tip

During Simulation: Tsunami Waves, position the tray on a flat surface with markers at 10 cm intervals to measure wave height and distance traveled.

What to look for

Pose the question: 'Imagine you live in a coastal town. What are two reasons why an early warning system for tsunamis is important for your safety?' Facilitate a class discussion, encouraging students to share their ideas and connect them to the concept of preparedness.

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

Activity 03

• Outdoor Investigation Session
• 25 min · Whole Class

Role-Play: Warning Systems

Assign roles as seismologists, sirens, and residents. One group shakes a model tray while others practice alerts and evacuations to high ground. Debrief on timing and message clarity.

Evaluate the importance of early warning systems for natural disasters.

Facilitation Tip

During Role-Play: Warning Systems, assign roles with clear timers to emphasize urgency in evacuation messages.

What to look for

Show students images of a landslide and a tsunami. Ask them to verbally identify one key difference in how these events occur and one similarity in their potential impact on a community.

• Remember
• Understand
• Analyze
• Social Awareness
• Self-Awareness
• Decision-Making

Activity 04

• Concept Mapping
• 40 min · Individual

Concept Mapping: Local Risks

Students mark Australian landslide and tsunami zones on maps using teacher-provided data. They draw impact paths and add warning icons, then share why certain areas prepare differently.

Analyze the factors that contribute to the occurrence of landslides.

What to look for

Provide students with two scenarios: one describing heavy rain on a steep, deforested hill, and another describing a strong earthquake under the ocean. Ask them to write one sentence explaining which event is more likely to cause a landslide and one sentence explaining how the earthquake could cause a tsunami.

• Understand
• Analyze
• Create
• Self-Awareness
• Self-Management

A few notes on teaching this unit

Teachers should blend direct explanation with guided inquiry. Start with a short, clear definition of each event, then let students explore materials to test hypotheses. Avoid over-explaining; instead, ask questions that prompt students to notice patterns in their models. Research shows that active construction of knowledge through trial, error, and discussion leads to deeper understanding than passive listening.

Successful learning looks like students confidently explaining triggers for landslides and tsunamis, using models to test ideas, and connecting early warnings to safety actions. They should articulate how human choices like deforestation or road-building affect risk, and why warnings save lives.

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Watch Out for These Misconceptions

• During Model Building: Landslide Slopes, watch for students who assume landslides only happen during earthquakes.

  Ask students to add water to their slope models using the spray bottle, then observe and record how the slope changes. Hold a class discussion to compare these results with their earthquake tests, highlighting rain as a key trigger.

• During Simulation: Tsunami Waves, watch for students who describe tsunamis as giant wind waves.

  Have students compare their wave tray results to a gentle wind ripple made by blowing through a straw. Point out the sudden, powerful surge of the tsunami model and discuss how it differs from wind-driven waves.

• During Role-Play: Warning Systems, watch for students who believe early warnings eliminate all tsunami damage.

  After the role-play, ask students to identify which actions saved lives and which impacts still occurred. Use their reflections to emphasize that warnings reduce harm but cannot prevent all damage.

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Methods used in this brief

• Outdoor Investigation Session
• Simulation Game
• Concept Mapping