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Grade 11 Logical Fallacies Worksheet with Answers

Grade 11 (US) · Year 12 (UK) · Class 11 (India) · English

Unit 5: Reading Informational TextEvaluating ReasoningCCSS RI.11-12.8

Spotting faulty reasoning such as bandwagon, ad hominem, straw man and slippery slope. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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Logical Fallacies

Grade 11 · English

Score___ / 12

Name

Class

Date

Learning goal: Evaluating Reasoning · CCSS RI.11-12.8

Directions: This worksheet has 2 parts. Read the instructions at the start of each part.

Example

Name the fallacy: 'You can't trust his idea — he's always late.'

Answer: ad hominem

RememberLogical fallacies

Bandwagoneveryone does itAd hominemattacks the personStraw mantwists the other argumentSlippery slopeone step → disasterFalse choiceonly two options givenHasty generalizationtoo little evidence
Part A

Name the fallacy:

  1. 1

    I met two rude tourists, so all tourists are rude.

  2. 2

    Why worry about pollution when there are so many other problems?

  3. 3

    The book is true because the book says it is true.

  4. 4

    If we allow phones in class, soon nobody will learn anything.

  5. 5

    This has always been done this way, so it must be right.

  6. 6

    No one has proven aliens don't exist, so they do.

  7. 7

    Either you support this plan or you hate our town.

  8. 8

    A famous actor says this vitamin works, so it must.

  9. 9

    I wore my lucky socks and we won, so the socks made us win.

  10. 10

    She wants shorter homework, so she thinks students shouldn't learn at all.

  11. 11

    Everyone has this phone, so you should buy it.

Part B

Answer each question. Use full sentences where you can.

  1. 12

    Why do writers need to avoid fallacies?

★ Challenge corner for fast finishers

Unscramble the letters: IFSH (clue: it swims)

How did I do?

Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/english/11/fallacies

Answer key (click to show)
  1. 1.hasty generalization
  2. 2.red herring
  3. 3.circular reasoning
  4. 4.slippery slope
  5. 5.appeal to tradition
  6. 6.appeal to ignorance
  7. 7.false dilemma (either/or)
  8. 8.appeal to (false) authority
  9. 9.post hoc (false cause)
  10. 10.straw man
  11. 11.bandwagon
  12. 12.fallacies make arguments illogical and less convincing
  13. ★fish (challenge corner)

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