Logical Fallacies Assignments



Video title:DIRECTV commercial - Don't Wake Up in a Roadside Ditch

Topic(s): Faulty reasoning, logical fallacies, slippery slope

Search terms: direct tv commercial roadside ditch

Time (of video): 0:32

Posted by: David Preece

Date posted: May 6, 2013


Video description: What happens when you don’t make the switch from cable? Watch a humorous example of the falling-victim-to-false-cause fallacy.


Question/writing prompt: Fallacies can slip into even the most careful reasoning. One false claim can derail an entire argument. Can you think of an example of weak logic in something you have recently read or heard?


In-class activities:


Logical Fallacies and Advertising Objective: Students learn the different types of logical fallacies.

Show the commercial.

  1. Ask students to explain how the commercial uses the falling-victim-to-false-cause fallacy. Discuss why advertisers employ this strategy.
  2. Break the class into as many as eight small groups. Assign a different form of faulty reasoning, a different logical fallacy, to each group.
  3. Task each group with writing a new DirecTV commercial using the logical fallacy they were assigned.
  4. Students should storyboard their new commercials and present them to the class.


Policing Others and Oneself Objective: Students explore the importance of logic in reasoning.

Show the commercial and ask students the following questions:

  • How can you look out for weak logic in your own arguments?
  • Can you acknowledge a time when you used faulty reasoning on purpose?
  • What can you do to identify weak logic in what you hear and read?

Induction and Logical Fallacy Homework

Homework on Induction and Logical Fallacies

Assignment #1:

For the first two number series below

a. Determine the mathematical pattern (induction)  ie. What is the equation for the successive numbers?

b. Determine the next two numbers in the series (deduction)

For the third series, determine the pattern and find the next two in the series (ex cr) 

Find a General Rule for the Number series: 0, 2, 8, 18, 32, 50, 72…..

Explain the Fibonacci Series: 1, 2, 3, 5, 8, 13, 21, 34,……

Stable Atomic Nuclei have the following number of nucleons (proton and neutrons):

2, 8, 20, 28, 50, 82, 126, …  

Assignment #2

From the following list of logical fallacies, pick two of them.  Then;

1. Give a definition of the logical fallacy.

2. Give a practical example of your own invention which illustrates this logical fallacy.

(definitions are available at https://web.cn.edu/kwheeler/fallacies_list.html )

  • Abusive ad hominem
  • Accent
  • Ambiguity (index)
  • Amphiboly
  • Age, Appeal to
  • Authority, Appeals to (4 types)
  • Authority, Legitimate Appeal to
  • Ad Hominem (5 types)
  • Begging the Question
  • Circumstantial ad hominem
  • Complex Question
  • Composition
  • Correlation vs. Causation
  • Division
  • Emotion and Desire, Appeals to (5 types)
  • Equivocation
  • False Dilemma
  • Flattery, Appeal to
  • Force / Fear, Appeal to (Argumentum ad Baculum)
  • Novelty, Appeal to
  • No True Scotsman
  • Numbers, Appeal to
  • Pity, Appeal to (Argumentum ad Misercordiam)
  • Poisoning the Well
  • Presumption
  • Quantifier Fallacy
  • Scope Fallacy
  • Tu Quoque (two wrongs don't make a right)
  • Genetic Fallacy


Last Updated: 10/03/2016


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