HASS · Year 10

Active learning ideas

Terra Nullius and its Legal Challenge

Active learning helps students confront the constructed nature of Terra Nullius by moving beyond abstract discussion into evidence-based analysis and role-play. When students examine primary sources, debate legal fictions, and reconstruct historical narratives, they recognize how legal doctrines distort Indigenous realities.

• ACARA Content Descriptions
• AC9H10K06

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

Activity 01

• Jigsaw
• 50 min · Small Groups

Jigsaw: Perspectives on Terra Nullius

Divide class into expert groups on British colonial, Indigenous, and modern legal views. Each group researches sources like Cook's journals or Mabo transcripts, then reforms into mixed jigsaws to share and synthesize insights. Conclude with a whole-class summary poster.

Explain the legal and historical implications of 'Terra Nullius'.

Facilitation Tip

For the Jigsaw, assign each expert group a distinct source set—explorer logs, Indigenous testimonies, or colonial proclamations—to ensure balanced evidence presentation.

What to look for

Pose the question: 'If you were a judge in 1788, presented with evidence of Indigenous custodianship, how would you have ruled on the claim of Terra Nullius?' Students should consider the legal frameworks of the time and the evidence available, articulating their reasoning.

• Understand
• Analyze
• Evaluate
• Relationship Skills
• Self-Management

Activity 02

• Document Mystery
• 60 min · Whole Class

Mock Mabo Court: Role-Play Trial

Assign roles as plaintiffs, defense lawyers, judges, and witnesses. Groups prepare arguments using provided excerpts from the High Court decision. Hold the trial with cross-examinations, followed by a verdict discussion.

Analyze how the concept of 'Terra Nullius' denied Indigenous land rights.

Facilitation Tip

In the Mock Mabo Court, provide students with role cards that include legal language from the 1992 judgment to ground arguments in real terminology.

What to look for

Provide students with a short primary source quote from a colonial official justifying Terra Nullius and a quote from an Indigenous perspective on land connection. Ask students to identify the core argument of each quote and explain how they conflict.

• Analyze
• Evaluate
• Self-Management
• Decision-Making

Activity 03

• Document Mystery
• 45 min · Small Groups

Source Carousel: Evidence Stations

Set up stations with documents: colonial maps, Indigenous oral histories, Mabo judgment summaries. Small groups rotate every 10 minutes, analyzing biases and ownership claims, then report findings to the class.

Critique the historical justifications for declaring Australia 'land belonging to no one'.

Facilitation Tip

Set a 5-minute timer at each Source Carousel station so students focus on extracting one key piece of evidence before rotating.

What to look for

On an exit ticket, ask students to write one sentence explaining the legal flaw in Terra Nullius and one sentence describing the main outcome of the Mabo decision.

• Analyze
• Evaluate
• Self-Management
• Decision-Making

Activity 04

• Document Mystery
• 40 min · Pairs

Timeline Debate: Chain of Events

Pairs create a shared timeline of Terra Nullius from 1788 to 1993. Debate at key nodes whether events reinforced or challenged the doctrine, voting with evidence sticks to build consensus.

Explain the legal and historical implications of 'Terra Nullius'.

Facilitation Tip

During the Timeline Debate, give teams a set of event cards to sequence and annotate with consequences, forcing them to justify each placement with evidence.

What to look for

Pose the question: 'If you were a judge in 1788, presented with evidence of Indigenous custodianship, how would you have ruled on the claim of Terra Nullius?' Students should consider the legal frameworks of the time and the evidence available, articulating their reasoning.

• Analyze
• Evaluate
• Self-Management
• Decision-Making

A few notes on teaching this unit

Teach this topic by centering Indigenous voices and legal reasoning over chronological narrative. Research shows that role-playing legal processes helps students grasp the mechanics of dispossession and redress, while station rotations build critical source analysis skills. Avoid framing the Mabo decision as a simple resolution—instead, emphasize its limits and the persistence of land disputes to prevent overgeneralization.

Students will articulate how Terra Nullius misrepresented Indigenous land systems, explain the procedural steps of native title claims, and evaluate the ongoing impact of the Mabo decision through multiple perspectives. Evidence from primary sources and peer discussions will shape their responses.

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Watch Out for These Misconceptions

• During the Jigsaw: Perspectives on Terra Nullius, watch for students who assume Indigenous land systems lacked structure because they differ from European property law.

  During the Jigsaw, provide each expert group with a table comparing Indigenous custodianship (e.g., fire-stick farming, songlines) to European concepts like enclosure. Have students present one mismatch in systems and ask peers to identify cultural assumptions.

• During the Mock Mabo Court: Role-Play Trial, watch for students who think the 1992 decision immediately returned all land.

  During the Mock Mabo Court, require each role to cite a clause from the Native Title Act 1993. After the trial, display a ‘dispossession timeline’ to show that extinguishment clauses still limit claims, then have students revise their closing arguments.

• During the Source Carousel: Evidence Stations, watch for students who believe Terra Nullius only applied to mainland Australia.

  During the Source Carousel, include a station with Mabo’s Torres Strait Islander plaintiffs’ testimonies and a colonial map labeling the region as ‘uninhabited.’ After rotation, ask groups to explain why the doctrine’s reach was nationwide but the precedent began in the Torres Strait.

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Methods used in this brief

• Jigsaw
• Document Mystery