60–70 minutes | Years 9–10 Critical Thinking
Constructed practice claims: Think alone, then compare with a partner. Name what makes the reasoning weak before naming a fallacy.
“We can ignore Ari’s transport proposal because Ari is only a student.”
Teacher reveal: Ad hominem—the speaker’s status does not test the proposal’s evidence.
“If the school accepts one late assignment, soon nobody will meet a deadline.”
Teacher reveal: Slippery slope—the extreme outcome is asserted without showing the steps or evidence.
In groups of three, rotate the roles of reader, detector, and challenger. For each card: identify the claim, quote the flawed step, name the best-fit fallacy, explain why the conclusion does not follow, and repair the claim without changing its underlying position.
| Claim/card | Quoted reasoning | Fallacy | Why it fails | Fair repair |
|---|---|---|---|---|
| 1 | ________________ | ________________ | ________________ | ________________ |
| 2 | ________________ | ________________ | ________________ | ________________ |
| 3 | ________________ | ________________ | ________________ | ________________ |
| 4 | ________________ | ________________ | ________________ | ________________ |
| 5 | ________________ | ________________ | ________________ | ________________ |
Accuracy rule: A label earns no credit without a quoted phrase and a causal explanation. More than one label may fit; defend the strongest diagnosis.
Fallacy labels test the structure of a claim; a whakapapa-informed relationship check asks what the claim disconnects. Choose one repaired claim and map the people, whenua, histories, obligations, and future consequences it involves.
Kaiako note: Do not reduce Māori reasoning to “holistic” and Western reasoning to “linear”. Whakapapa is used here as a specific relationship-and-obligation check; local tikanga remains locally held knowledge.
Individually submit one diagnosis-and-repair paragraph: The claim says …; the reasoning fails because …; this is best described as …; a fairer version is …; one relationship or voice still missing is …
Assessment evidence: completed detective table plus the individual paragraph. Success requires an accurate quotation, a reasoned diagnosis, and a repair that preserves the original position.
Students will identify how a weak reasoning step operates, explain why it does not support the conclusion, and repair the claim fairly.
Scaffold support: Provide argument frames (claim → evidence → reasoning → counter-argument) for entry-level access. Use structured controversy activities where students argue assigned positions. Offer extension tasks requiring students to analyse a real media article or policy document using the lesson's critical framework.
ELL / ESOL: Pre-teach argumentative language structures ("I argue that…", "The evidence suggests…", "However, one might counter…"). Allow oral argument as a first step before written production. Sentence frames and argument maps lower the language barrier while maintaining cognitive demand.
Inclusion: Structured debate and discussion formats benefit all learners — particularly neurodiverse students who thrive with explicit rules and clear roles. Affirm that disagreement done respectfully is a high-value academic and civic skill. Allow quiet processing time before group discussion. Offer written alternatives for students who find oral argument challenging.
Mātauranga Māori lens: Te whakaaro māramatanga — enlightened thinking — reflects a long tradition of reasoned debate in Te Ao Māori. The whare (meeting house) is a place of kōrero, where multiple perspectives are heard before decisions are made. Tikanga requires that arguments be made with integrity and respect (mana). Māori oratory (whaikōrero) is a sophisticated critical tradition — whakataukī encode compressed wisdom that often challenges surface-level thinking.
Prior knowledge: Best used within a sequence building critical thinking skills progressively. No specialist knowledge required for entry-level engagement with structured tasks.
This lesson contributes to the verified inquiry practice by requiring students to quote a claim, diagnose its reasoning, and repair it without changing the speaker’s position.
See the unit overview for the exact verified Ministry statements and lesson map.