Terra Nullius Doctrine

Overview

In this lesson (Lesson 5 of 16) within “Australia’s Transformative Journey”, students examine what terra nullius means, how British colonisers used it to justify sovereignty and legal control, and the moral and legal implications for First Nations Peoples. Students practise using evidence to explain how ideas and law can shape outcomes.

Learning intentions

Students will:

• explain what the doctrine of terra nullius claimed and how it was used in colonisation
• identify reasons colonisers gave for treating land as “unowned” under British law
• analyse impacts of these legal ideas on First Nations Peoples, including dispossession and conflict
• compare perspectives to evaluate whether the doctrine was morally and legally legitimate

Success criteria

Students can:

• define terra nullius and describe its purpose in colonisation
• outline at least two “legal” justifications used by the British and link them to actions that followed
• describe two impacts on First Nations Peoples and connect them to the doctrine’s assumptions
• use evidence to make a judgement about moral and legal implications, supported with reasoning

Curriculum links

• Humanities and Social Sciences (History): causes and effects of European contact and extension of settlement, including their impact on First Nations Peoples of Australia (focus on colonisation effects and legal/moral dimensions)
• Humanities and Social Sciences (History): different experiences and perspectives of colonisers, settlers and First Nations Peoples, including why terms such as “invasion”, “colonisation” and “settlement” are contested
• Civics and Citizenship: key features and jurisdictions of Australia’s court system, and operations of courts and tribunals (used later to interpret how legal decisions shape society; here students build understanding of “law’s role”)

Lesson structure (60 minutes)

1. 0–8 min · Hook: Concept snapshot

• Teacher displays a short scenario prompt: “If a government declares land ‘legally empty’, what rights and actions might follow?”
• Students do a quick write: 3–2–1 (3 words they associate with “law”, 2 questions, 1 prediction about the term terra nullius).

2. 8–18 min · Mini-teach: What terra nullius claimed

• Teacher explains terra nullius as a doctrine used to support the idea that land belonged to no one under the colonising power’s legal framework, and notes that this claim was contested.
• Students annotate an illustrated summary (teacher-provided) with three headings: “Claim”, “Purpose”, “Key assumption”.

3. 18–34 min · Source investigation: Justifications vs impacts

• Teacher sets up two evidence stations (printed extracts; no links). Station A focuses on how Britain justified sovereignty using the doctrine. Station B focuses on impacts on First Nations Peoples (dispossession, frontier conflict, disease, disruption to cultural life).
• Students rotate and complete a scaffolded table:
• “What is being claimed?”
• “How is it justified?”
• “What impact does this idea help produce?”
• Teacher circulates and asks probing questions: “What does the doctrine assume about ownership or law?” and “Who benefits and who is harmed?”

4. 34–48 min · Perspective comparison: Moral and legal implications

• Teacher facilitates a structured discussion using sentence starters on the board:
• “From the colonisers’ perspective…”
• “From First Nations Peoples’ perspective…”
• “The moral issue is…”
• “The legal issue is…”
• Students participate in a “Think–Pair–Share, then rank” activity: they choose the top 2 implications (moral and legal) from a list and justify with at least one piece of evidence from the source table.

5. 48–56 min · Quick judgement: Evidence-based paragraph

• Teacher models a brief paragraph structure: claim → evidence → reasoning → judgement (because/reason).
• Students write one paragraph answering: “To what extent did terra nullius justify British colonisation legally and morally?” They must include: one coloniser justification, one impact, and one judgement sentence.

6. 56–60 min · Exit ticket

• Teacher collects an exit ticket with two prompts:
• Define terra nullius in one sentence.
• Give one reason it was contested and link it to an impact.

Resources

• Printed source extracts for Station A and Station B (short, readable; teacher-curated)
• Illustrated concept summary handout (Claim / Purpose / Key assumption)
• Evidence table worksheet with sentence starters
• Board markers, timer, and visible discussion rubric (simple criteria)
• Student notebooks or loose-leaf paper
• Exit ticket slips
• Projector or display for hook scenario prompt

Assessment

• Formative during station work: teacher checks completed evidence tables for accurate identification of claims and impacts
• Discussion checks: teacher listens for evidence use and distinguishes between coloniser claims and First Nations experiences
• Exit ticket: assesses understanding of definition and ability to link contestation to impacts

Differentiation

• Provide sentence starters and a word bank (e.g., doctrine, sovereignty, ownership, contested, dispossession) for students who need language support
• Offer a “guided evidence” version of the station table with partially completed rows for students requiring scaffolds
• Extension option embedded in the paragraph task: for faster students, require an additional “counter-perspective” sentence (e.g., why the doctrine may be viewed as legally flawed or morally harmful)
• For EAL/SEN: allow highlighting key phrases in sources and use audio-reading for one station excerpt if available; encourage partner support during the rotation