2.3 Deductive Reasoning

HW pg. 90 #4­10, 21, 22, 25­28

September 09, 2014

Bellwork

Pick up the paper on the back table.

Get into a group of 3.

Open your book to pg. 86.

Use the clues to fill in the chart.

2.3 Deductive Reasoning

HW pg. 90 #4­10, 21, 22, 25­28

September 09, 2014

2.3 Deductive Reasoning

HW pg. 90 #4­10, 21, 22, 25­28

September 09, 2014

2.3 Deductive ReasoningObjectives:

1. To introduce & familiarize students with the deductive reasoning process.2. To learn the relationship between inductive & deductive reasoning.

What is deductive reasoning?uses facts, rules, definition, or properties to reach logical conclusions

Given: BD bisects ABC

B D

C

A

What does bisect mean?

How does that apply to this picture?

Given: PQT ≅ TQR

What conclusion can you deduce? Based on what?

What is being stated?

How does that apply to this picture?

What conclusion can you deduce? Based on what?

QT

R

P

2.3 Deductive Reasoning

HW pg. 90 #4­10, 21, 22, 25­28

September 09, 2014

Laws of LogicLaw of Detatchment: If the hypothesis of a T conditional statement is T, then the conclusion is T.

2.3 Deductive Reasoning

HW pg. 90 #4­10, 21, 22, 25­28

September 09, 2014

Law of SyllogismIf hypothesis p, then conclusion q. If these are TIf hypothesis q, then conclusion r. If hypothesis p, then conclusion r. Then this is T

2.3 Deductive Reasoning

HW pg. 90 #4­10, 21, 22, 25­28

September 09, 2014

HW pg. 90 #4-10

2.3 Deductive Reasoning

HW pg. 90 #4­10, 21, 22, 25­28

September 09, 2014

2.3 Deductive Reasoning

HW pg. 90 #4­10, 21, 22, 25­28

September 09, 2014

2.3 Deductive Reasoning

HW pg. 90 #4­10, 21, 22, 25­28

September 09, 2014

2.3 pg. 90

#4-10, 21, 22, 25-28