False analogies, Strawman and Red Herring Fallacy

Unit 8

Critical Thinking
Fallacies of Logic

Day 3

7

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Do Now

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If we let students chew gum during class, soon they'll start
sneaking in candy, then they'll be eating full meals, and before
you know it, the classroom will turn into a chaotic cafeteria with
no learning happening at all.

Open Ended

Do Now MRS:Quick Response:

If we let students chew gum during class, soon they'll tart
sneaking in candy, then they'll be eating full meals, and before
you know it, the classroom will turn into a chaotic cafeteria with
no learning happening at all.

8

Learning Objective:
The SWBAT identify false analogy, straw man, and red herring
fallacies.

DOL:
Given several prompts, the SW identify false analogy, straw man,
and red herring fallacies 4 out of 5 times to show mastery.

Learning Objective & DOL

Open Ended

MRS Quick response: Write this: Learning Objective:
The SWBAT identify false analogy, straw man, and red herring
fallacies.

9

In previous lessons we learned about the

following fallacies.

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● generalization fallacy
● ad hominem fallacy
● false equivalence

fallacy

● slippery slope

argument

● circular reasoning

10

In today’s lesson we will learn about:

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● false analogy fallacy
● straw man fallacy
● red herring fallacy

11

The students while in a group will make an anchor chart of
these three fallacies:
● false analogy fallacy
● straw man fallacy
● red herring fallacy

Open Google find the definition and an example of:

1. false analogy fallacy
2. straw man fallacy
3. red herring fallacy
4. put these definitions and examples on an anchor chart.

12

The argument is considered flawed because the
claim cannot be proven as true or false, it is

subjective.

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Fallacy of logic is an argument that may sound

convincing or true, but it is actually flawed.

Open Ended

Ink Pair Share MRS: Write this definition:

A fallacy of logic is an argument that may sound convincing or true, but it is flawed. The argument is considered flawed because the claim cannot be proven as true or false, it is subjective.

Example: False Analogy Fallacy: occurs when a person says that two things are alike in multiple ways just because they are alike in one way.

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False Analogy Fallacy: occurs when a
person says that two things are alike in
multiple ways just because they are alike in
one way.

Multiple Choice

False analogies occur when too much _________ is placed on proven similarities.

• Stigma

• Weight

• Metacognition

Multiple Choice

1. AT Bat Questions:

2. What is the definition of a false analogy fallacy?

• 1. Drawing a logical connection between two similar entities.

• 1. Using analogies to strengthen an argument.

• Comparing two unrelated things and assuming they are alike in multiple ways just because they are alike in one way.

• 1. Finding common characteristics between two distinct objects.

15

False Analogy Fallacy examples:

Premise 1: Apples, Strawberries and
Raspberries are all red.
Premise 2: Apples, Strawberries and
Raspberries are all fruit
Conclusion: All fruits are red

Open Ended

Write this example of a False Analogy Fallacy.

Premise 1: Apples, Strawberries and
Raspberries are all red.
Premise 2: Apples, Strawberries and
Raspberries are all fruit
Conclusion: All fruits are red

16

Penguins are black and white; some old TV shows
are black and white. Therefore, some penguins are

old TV shows.

How is this an example of a false analogy fallacy?

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Open Ended

How is this an example of a false analogy fallacy?Penguins are black and white; some old TV shows are black and white. Therefore, some penguins are old TV shows.

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Straw Man Fallacy: occurs when someone
changes their opponent’s argument, and then
refutes this “new” version of the argument.

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Open Ended

MRS: Ink Pair Share: Write this definition:

Straw Man Fallacy: occurs when someone changes their opponent’s argument, and then refutes this “new” version of the argument.

Fill in the Blank

A straw man fallacy occurs when someone ______________  their opponent’s argument, and then refutes this “new” version of the argument.

Choose one:

Changes or Answers

18

Straw man fallacies occur when someone takes the
argument of another person and __________it, and
attacks that version of the argument instead of the
original one.

distorts

https://www.youtube.com/watch?v=xqQ-g60BVx8

Open Ended

Straw man fallacies occur when someone takes the argument of another person and __________it, and attacks that version of the argument instead of the original one.

Choose one: Distorts or Cancels

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Straw man Fallacy Example

Position A - We should ban cell phone use in
the classroom.
Position B - If we don’t use technology we
will be returning to the older ways which are
not relevant to the current generation.

Open Ended

Write this example of a strawman fallacy: MRS INK PAIR SHARE

Position A - We should ban cell phone use in
the classroom.
Position B - If we don’t use technology we
will be returning to the older ways which are
not relevant to the current generation.

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How is this an example of a straw man fallacy?

Ethan: I think we should have
healthier options in the school
cafeteria, like more fruits and
vegetables.

Kayla:So, you're saying we should
ban all the tasty food and force
everyone to eat bland tasteless
food all day? That's ridiculous!

Open Ended

How is this an example of a straw man fallacy?

Ethan: I think we should have healthier options in the school cafeteria, like more fruits and vegetables.
Kayla:So, you're saying we should ban all the tasty food and force everyone to eat bland tasteless food all day? That's ridiculous!

21

Red Herring Fallacy: occurs when irrelevant
information is presented alongside relevant
information, distracting attention from the relevant
information.

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It’s time to do your

homework.

We had pizza for

lunch today.

Open Ended

Write this :

Red Herring Fallacy: occurs when irrelevant
information is presented alongside relevant
information, distracting attention from the relevant
information.

23

Red herring fallacies occur when someone uses
____________ information as a distraction.

https://www.youtube.com/watch?v=3mK5CPzc85k

Multiple Choice

Red herring fallacies occur when someone uses
____________ information as a distraction.

• Irrelevant

• Metaconition

• Facts

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Red Herring Fallacy Example

Kid - They don’t pay me enough at work
Father - When I was your age, I didn’t make
as much money per week as you make now.
Kid - This is true but it doesn’t change or
affect my situation now.

Open Ended

Write this example of a Red Herring Fallacy:

Kid - They don’t pay me enough at work
Father - When I was your age, I didn’t make
as much money per week as you make now.
Kid - This is true but it doesn’t change or
affect my situation now.

24

How is this an example of a red herring fallacy?

Abrahim:I think we should have some
rules about how much time we spend on
social media. It's affecting our
productivity and focus.

Tai’lynn:Why are you always so
negative? We have much bigger
problems in the world, like climate
change. Focusing on social media rules
is just a distraction from the real issues.

25

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Why is it important to understand different

fallacies?

Open Ended

Why is it important to understand different fallacies?

27

Given several prompts,
the SW identify false
analogy, straw man,
and red herring fallacies
4 out of 5 times to show
mastery.

Demonstration of Learning