Activity 01
Gallery Walk: Fallacy Hunt
Display persuasive texts or ads around the room with highlighted claims. Pairs visit each station, identify fallacies on sticky notes, and justify choices. Regroup to share findings and vote on strongest examples.
Differentiate between valid and fallacious reasoning in persuasive writing.
Facilitation TipDuring the Fallacy Hunt, circulate with a checklist of common fallacies to guide students who label examples incorrectly.
What to look forPresent students with three short argument excerpts. Ask them to label each excerpt as using valid reasoning, a logical fallacy (naming it if possible), or weak/irrelevant evidence, providing a brief justification for each.
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Activity 02
Evidence Audit Stations
Set up stations with claims matched to evidence types like stats or anecdotes. Small groups rotate, rating evidence on a rubric for relevance and strength, then swap feedback. Conclude with class synthesis.
Assess the strength and relevance of various types of evidence in supporting a claim.
Facilitation TipAt Evidence Audit Stations, remind students to record not just the type of evidence but its source, date, and potential bias in the margins of their sheets.
What to look forPose the question: 'When is anecdotal evidence more persuasive than statistical evidence, and why?' Facilitate a class discussion where students debate the strengths and weaknesses of each evidence type in different contexts.
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Activity 03
Argument Revision Relay
Teams receive flawed arguments; first member fixes one fallacy, passes to next for evidence strengthening, and so on. Teams present final versions and explain changes.
Explain how the strategic placement of data and statistics enhances an argument's credibility.
Facilitation TipFor the Argument Revision Relay, provide colored highlighters so students can visually track where logic links evidence to claims in each revision.
What to look forIn pairs, students exchange a paragraph they have written for a persuasive essay. Each student identifies one piece of evidence used by their partner, assesses its relevance and strength, and suggests one way to improve the logical connection between the evidence and the claim.
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Activity 04
Debate Evidence Clash
Whole class divides into affirm/negate teams on a prompt. Each side presents logic and evidence; opponents score on rubrics during live feedback rounds.
Differentiate between valid and fallacious reasoning in persuasive writing.
Facilitation TipIn Debate Evidence Clash, pause the debate briefly to ask clarifying questions that push students to justify their evidence choices.
What to look forPresent students with three short argument excerpts. Ask them to label each excerpt as using valid reasoning, a logical fallacy (naming it if possible), or weak/irrelevant evidence, providing a brief justification for each.
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Generate Complete Lesson→A few notes on teaching this unit
Teach logos by modeling the process yourself first. Think aloud as you evaluate a sample argument, showing how you question the source of statistics or the logic in a claim. Avoid presenting logos as a set of rules; instead, frame it as a toolkit students refine through practice. Research shows that argument mapping and peer feedback improve logical reasoning when students collaborate to fill gaps in each other’s reasoning chains.
Successful learning looks like students confidently distinguishing valid reasoning from fallacies, selecting strong evidence, and structuring arguments with clear logical connections. They should also articulate why certain evidence supports a claim better than others.
Watch Out for These Misconceptions
During Gallery Walk: Fallacy Hunt, students may assume all examples labeled as fallacies are equally weak.
During Gallery Walk: Fallacy Hunt, redirect students to compare the severity of fallacies by rating them on a scale from minor to major, discussing why some distortions are more damaging than others in real arguments.
During Evidence Audit Stations, students may treat all data as neutral and ignore its origin.
During Evidence Audit Stations, have students trace a statistic back to its source by annotating the original study or dataset, then discuss how funding sources or publication dates can introduce bias.
During Debate Evidence Clash, students may believe fallacies only appear in weak arguments.
During Debate Evidence Clash, pause after each round to ask teams to identify one fallacy in their opponent’s argument, even if the overall case seems strong, to reveal how fallacies can slip into polished reasoning.
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