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Worksheet10th GradeLevel 2 · Standard

Free 10th Grade Evaluating Reasoning: Logical Fallacies in an Editorial Worksheet

Students evaluate the evidence and reasoning in an original opinion editorial arguing against a later school start time. They identify five common logical fallacies (straw man, false dilemma, slippery slope, appeal to authority and hasty generalization), explain why each argument fails, separate the one reasonable point from the flawed ones and rewrite weak arguments so they are fair and supported. Model answers and a rubric for the extended response are included.

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Grade
10th Grade
Subject
English
Topic
Persuasive Writing
Difficulty
Level 2 · Standard
Estimated time
40 minutes
Curriculum
Texas grade levels (TEKS)
Questions
14
Answers
Included, with working
Format
PDF (A4), print or complete online

Students will practice

  • identifying straw man, false dilemma, slippery slope, appeal to authority and hasty generalization
  • explaining why a piece of reasoning is flawed
  • distinguishing relevant evidence from opinion and anecdote
  • rewriting a flawed argument so that it is fair and supported
  • writing an evaluative paragraph about the strength of an argument

Curriculum: Texas grade levels (TEKS). We show specific outcome codes only where they have been verified against the official curriculum document.

What's next?

Completed: Evaluating Reasoning: Logical Fallacies in an Editorial

  1. 1Analyzing a Poem: Night Shift — Text Analysis
  2. 2Writing an Analytical Paragraph (PEEL/TEEL)
  3. 3Comparing Two Texts

How to use this worksheet

  1. Print the PDF or complete it on screen. Write the student's name and date at the top.
  2. Read the instructions for each part together before starting. Encourage working to be shown.
  3. Mark with the answer sheet. Use the model answers and success criteria as a guide rather than a single right answer.
  4. Record the score, celebrate what went well, then follow the "What's next" suggestion.

Common questions

Who is this worksheet for?

10th Grade students (typically ages 15–16) working on persuasive writing. It is pitched at level 2 · standard.

Are the answers included?

Yes. The PDF includes a full answer sheet with model answers and success criteria where there is more than one good answer. You can also view the answers online.

How long does it take?

About 40 minutes for 14 questions. Short, regular sessions work best: two or three a week beats one long one.

Do I need to sign up to download?

No. Click Download Free PDF and it opens immediately. It is free for personal, classroom and homeschool use.

What should we do next?

Try Analyzing a Poem: Night Shift — Text Analysis.

Preview

Success TutoringWorksheets10th Grade · English · Persuasive Writing

Evaluating Reasoning: Logical Fallacies in an Editorial

Name

Date

Score /

A strong argument can be confident and still fair. As you read, ask of every claim: what is the evidence, and does it really support this conclusion?

Part A: Identify the fallacy

Read the editorial and the key terms. Then circle the best answer.

Opinion: Later School Start? Let's Not Sleepwalk Into Disaster (original editorial written for this worksheet; the writer is fictional)

(1) The school board's proposal to move the start of the school day from 8:30 am to 9:30 am is being sold as a gift to tired teenagers. It is nothing of the kind.

(2) Supporters of the change apparently believe that young people should be allowed to drift into class whenever they feel like it, as if school were a café that opens when its customers finally wake up.

(3) Let us be clear about the choice in front of us. Either we keep the bell exactly where it is, or we raise a generation that cannot get out of bed without permission.

(4) And where would it end? If the bell moves an hour this year, next year it will move two. Then lessons will become optional, and before long students will be choosing their own marks.

(5) I put the question to a celebrated television chef, a man who has run busy kitchens for thirty years, and he was in no doubt: early starts build character. If anyone understands discipline, it is him.

(6) My own nephew tried sleeping in during his final year of school, and his marks dropped. Teenagers clearly do worse, not better, when they are given more time in bed.

(7) There is also a practical question the board has not answered. The same buses that carry secondary students also run the routes for the district's junior schools, so a later start could mean rebuilding both timetables, at a cost the board has not yet published.

(8) Keep the bell at 8:30. Our children's futures depend on it.

Key terms. Straw man: misrepresenting an opponent's view as weaker or sillier than it is, then attacking that version. False dilemma: presenting only two options when others exist. Slippery slope: claiming one step will inevitably lead to a chain of extreme consequences, without showing why. Appeal to authority (irrelevant authority): relying on someone's status rather than evidence, especially when their expertise is in a different field. Hasty generalization: drawing a broad conclusion from too few or unrepresentative examples.

1.Paragraph 2 ("Supporters ... apparently believe that young people should be allowed to drift into class whenever they feel like it") is an example of:
  1. Aslippery slope
  2. Bstraw man
  3. Chasty generalization
  4. Dappeal to authority
2.Paragraph 3 ("Either we keep the bell exactly where it is, or we raise a generation that cannot get out of bed") is an example of:
  1. Afalse dilemma
  2. Bstraw man
  3. Cappeal to authority
  4. Dhasty generalization
3.Paragraph 4 ("next year it will move two. Then lessons will become optional") is an example of:
  1. Ahasty generalization
  2. Bappeal to authority
  3. Cslippery slope
  4. Dfalse dilemma
4.Paragraph 5 (the television chef) is an example of:
  1. Astraw man
  2. Bappeal to authority
  3. Cfalse dilemma
  4. Dslippery slope
5.Paragraph 6 (the writer's nephew) is an example of:
  1. Ahasty generalization
  2. Bslippery slope
  3. Cfalse dilemma
  4. Dstraw man
6.Which paragraph raises the most reasonable concern?
  1. AParagraph 2
  2. BParagraph 4
  3. CParagraph 6
  4. DParagraph 7

Part B: Questions that test reasoning

7.Match each fallacy to the question that exposes it.
  • Straw man
  • False dilemma
  • Slippery slope
  • Appeal to authority
  • Hasty generalization
  • Is this really what the other side is arguing?
  • Is this sample large and typical enough to support the conclusion?
  • Are these truly the only two options?
  • Is this person an expert in this particular field, and what is the evidence?
  • Why would the first step necessarily lead to the last?

Part C: Explain and repair the reasoning

Answer in full sentences.

8.What argument would supporters of a later start more likely make? Write it fairly, in one sentence, as a contrast to the straw man in paragraph 2.[2 marks] (answer space)
9.Name two options the writer ignores in paragraph 3.[2 marks] (answer space)
10.Explain why the evidence in paragraph 6 does not support the conclusion "Teenagers clearly do worse ... when they are given more time in bed."[3 marks] (answer space)
11.Paragraph 7 is the strongest point, but it is still incomplete. What evidence would make it persuasive?[2 marks] (answer space)
12.Rewrite paragraph 5 so that it appeals to a relevant source of evidence instead of an irrelevant authority. Do not invent statistics.[2 marks] (answer space)
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Preview — the PDF contains the full resource and answer sheet.

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About this resource

Created by
Success Tutoring
Last reviewed
1 October 2026
How it was made
Written by our team

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