Lesson 4: From Evidence to a Defensible Claim
Evidence does not explain itself. Students practise the intellectual move between a source and a conclusion—and learn to state where the conclusion stops.
Lesson 4: From Evidence to a Defensible Claim
Ngā Whāinga Akoranga — Learning Intentions
WALT: I can build a paragraph whose claim, evidence and explanation serve a clear purpose
WILF: I can write a precise claim, select relevant evidence, explain the link and name one limit without weakening the argument into vagueness.
Whakataukī | Traditional Wisdom
“Nāu te rourou, nāku te rourou, ka ora ai te iwi.”
With your food basket and mine, the people will thrive.
Te Whakatakotoranga | Run of show
Tirohanga Whānui | What this lesson is doing
Academic-writing lessons often produce a quotation sandwich: point, evidence, then a final sentence that repeats the quotation. The paragraph looks complete but the reasoning is absent. This lesson makes the hidden bridge visible. Students use a source already evaluated in Lesson 3, so the challenge is not finding more material; it is making a conclusion no larger than the evidence can carry.
You'll need
- A short shared source and claim from Lesson 3; two model paragraphs using the same evidence, one with reasoning and one with repetition.
- Highlighters for claim, evidence, warrant, limit and implication.
Do Now — Which paragraph thinks? 8 min
What it is: Comparing surface structure with actual reasoning.
Run it
- Cover the evidence (8 min): Students read two short paragraphs using the same source. They cover the quoted or paraphrased evidence and ask whether the remaining sentences still contain an argument. Highlight the sentence that explains why the evidence supports the claim. If neither paragraph has one, write the missing “because” sentence.
Act 1 — Make the claim earn its size 15 min
What it is: Calibrating the certainty and scope of a claim to the available evidence.
Run it
- Shrink until defensible (15 min): Give groups an over-large claim built from the shared source: one example becomes “all”, a short period becomes “always”, or association becomes cause. Groups underline the leap, then revise the claim using precise nouns, timeframe and degree. They must keep it meaningful—“this may possibly suggest something” is safe but useless.
Act 2 — Build the bridge 15 min
What it is: Writing the reasoning that connects evidence to a conclusion.
Run it
- Ask why twice (15 min): Students place the claim and evidence on opposite sides of a page. Between them, write: “This evidence matters because…” and “That supports the claim because…”. Partners challenge any bridge that merely repeats words from the evidence. The writer may need to add a definition, mechanism, comparison or contextual fact—then decide whether that added premise also needs support.
Act 3 — Change the purpose 15 min
What it is: Revising the same reasoning for different audiences and consequences.
Run it
- Write for two readers (15 min): Students turn the claim-evidence bridge into two short versions: an academic paragraph for a subject teacher and a plain-language explanation for a student deciding what to do next. They annotate one deliberate change in vocabulary, structure or detail. Then add a limit sentence to the higher-consequence version: what remains uncertain or outside the source?
Synthesise — The defensible paragraph 8 min
What it is: Five purposeful moves assembled without formulaic labels.
Run it
- Assemble and read aloud (8 min): Write a paragraph containing a precise claim, relevant evidence, the bridge, a proportionate limit and an implication. Read it to a partner with the evidence sentence omitted. The partner names what the reasoning still establishes and where it now becomes unsupported. Restore or revise.
Exit ticket — The sentence doing the work 4 min
What it is: Identifying the intellectual centre of the paragraph.
Run it
- Copy and defend (4 min): Students copy the one sentence that does the most reasoning and finish: “Without this sentence, the reader would have to assume ___.” That missing assumption becomes the revision target.
Ngā Huarahi Ako | Differentiation
Tautoko / Support
- Provide claim, evidence and bridge as movable strips; students sequence and revise before writing continuous prose.
- Offer bridge stems: “This matters because…”, “The pattern is…”, “A reasonable limit is…”.
Toitoi / Extension
- Write the strongest plausible counter-interpretation of the same evidence, then state what further evidence would discriminate between the two.
Te reo Māori
- Kupu: kerēme (claim), taunakitanga (evidence), whakamārama (explanation), kaipānui (reader/audience).
Mātauranga Māori | The baskets do different work
The rourou image is not a decorative way to say “collaborate”. Each contribution has content, and the outcome depends on what the contributions make possible together. In the paragraph, evidence is one basket and reasoning is another: neither can substitute for the other. In classroom discussion, the whakataukī also reminds the writer to acknowledge the people and sources whose contributions make the argument possible rather than presenting gathered knowledge as solely their own.
Hononga Marautanga | Curriculum
Te Mātaiaho (2025) · English · Phase 4 · statement id 15963Authors have specific purposes for writing; their purpose influences the deliberate choices they make about the language, structure, style, and tropes in their texts.
Act 3 makes purpose operational by requiring two versions of the same reasoning for different readers. Students must identify the deliberate change rather than merely naming “audience”. The lesson also adds a constraint: effective purpose cannot justify making a claim larger or more certain than its evidence.
Sources and checking
- Curriculum quotation: statement 15963 is pasted byte-faithfully from the canonical active curriculum corpus.
- Teacher models: build both model paragraphs from the same short, source-checked material so students compare reasoning rather than topic knowledge.
- No universal paragraph formula is claimed: claim, evidence, reasoning, limit and implication are analytic moves. Writers may order them differently when purpose demands it.