Deductive & Inductive Reasoning

MINI-LESSON

Types of Reasoning

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Deductive reasoning begins with general statements accepted to be true (the premises) and ends up with a specific factual statement.

LET'S PRACTICE!!

Deductive Reasoning

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Multiple Choice

Using the statements: If it is Friday, then I will get paid. It is Friday.

Choose the deduction.

• It is not Friday

• It is Friday

• I will not get paid

• I will get paid

Multiple Choice

What can you deduce from the given true statements?

If an animal is a dog, then they like biscuits.

Sammy is a dog.

• Sammy is a Great Dane

• Sammy likes biscuits.

• Sammy is really a cat.

• We can't conclude anything.

Multiple Choice

What does deductive reasoning use to form its arguments?

• patterns

• observed examples

• specific cases

• facts and laws of logic

Multiple Choice

What can you deduce from the given true statements?

No human can fly.

I am a human.

• I can fly.

• I cannot fly.

• I am not a human.

• We can't conclude anything.

Multiple Choice

What can you deduce from the given true statements?

Every child needs love and attention.

Jose is a child.

• Jose does not need love and attention.

• Jose needs love and attention.

• Jose is not a child anymore.

• We can't conclude anything.

Multiple Choice

What can you deduce from the given true statements?

If you live in Orlando, then you live in Florida.

You live in Orlando.

• You don't live in Florida.

• You hate snow.

• You live in Florida.

• We can't conclude anything.

Inductive Reasoning

Using specific observations to arrive at general conclusions.

Abductive Reasoning is similar, but it's when you have incomplete information and knowledge of patterns to offer the simplest, most likely explanation. (BEST GUESS!)

I hope this doctor is using inductive reasoning, not abductive.

Multiple Choice

The type of reasoning where a person makes  conclusions based on observations and patterns is called...

• Inductive reasoning

• Deductive reasoning

• Conjecture

• Experiments

Multiple Choice

How would you describe this pattern's rule?
65, 62, 59, 56, 53, 50

• Subtract 2

• Subtract 3

• Subtract 4

• Add 3

Multiple Choice

What comes next in the pattern?

• up, down, right

• down, up, left

• up, right, down

• down, left, right

LET'S PRACTICE!!

DEDUCTIVE or INDUCTIVE??

It might be challenging, but don't give up!

These are tough concepts, but I believe in you!!

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Multiple Choice

The first marker I pulled out the box is blue. The second one I pulled out is blue, too. So, all the markers in here are probably blue.

• Deductive

• Inductive

Multiple Select

I heard lots of barking last night. The neighbor’s dog must’ve been pretty upset about something, since he rarely barks

• Deductive

• Inductive

Multiple Select

Jack is taller than Jill. Jill is taller than Joey. Therefore, Jack is taller than Joey.

• Deductive

• Inductive

Multiple Select

It was the pizza that made my stomach churn. What else could it be? I was fine until I ate it.

• Deductive

• Inductive

Poll

How did you do in your FIRST reasoning lesson??

• I really struggled. This is difficult for me.

• Not bad, but I need more practice!

• Pretty good! I'm learning it!

• GREAT! I could teach this to others!