# Today’s Tongue Twister!~ - PowerPoint PPT Presentation

1 / 42

Today’s Tongue Twister!~. Four furious friends fought for the phone. Sherlock Holmes. Logic. M. De duction. The process of reasoning from general statements (premises) to reach a logically certain conclusion. De duction. All men are mortals. Socrates is a man. // Socrates is mortal.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

### Download Presentation

Today’s Tongue Twister!~

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

## Today’s Tongue Twister!~

Four furious friends fought for the phone.

Sherlock Holmes

M

### Deduction

• The process of reasoning from general statements (premises) to reach a logically certain conclusion.

### Deduction

• All men are mortals.

• Socrates is a man.

// Socrates is mortal.

### Deduction

• All squares are rectangles.

• Rectangles have four sides.

// All squares have four sides.

### INduction

• The process of reasoning from evidence to a logically probable conclusion.

### INduction

• We’ve only seen black dogs today.

// The next dog we see will be black.

• 3,6,9,12,15…

// The next number will be 18

### Induction vs. deduction

What is so different between the two?

• Inductive reasoning:

• …tries to conclude with probability.

• …generally takes a bottom-up approach.

• …takes evidence and seeks a theory to explain the observations.

• Deductive reasoning:

• …tries to conclude with necessity.

• …generally takes a top-down approach.

• …takes conclusions and seeks evidence to support the conclusion.

?

S

### RIDDLES

• I will create 2 teams.

• Use the clues to solve the riddle.

• If a member of your team solves the riddle, your team gets 5 points.

### RULES

• Raise your hand when you have a guess.

• Your team does not lose points for incorrect guesses.

• If your team breaks a class rule, you forfeit (lose) 5 points.

### 1st Riddle

• I am not a bird, but I can fly.

• I can fly even though I am blind.

• I am not deaf and I am dark-skinned.

• I sleep upside down.

BBBBBBBBB

Bat

### 2nd Riddle

• I’m yellow and round.

• I’m built to bounce.

• I’m furry like a peach, and you can serve me.

• You hit me with a racquet.

Tennis Ball

### 3rd Riddle

• I’m found in Africa.

• I’m striped.

• I have the first and last letters of the alphabet in my name.

• I forage for food.

Zebra

Tennis Ba

### 4th Riddle

• I’m in every classroom.

• I’m hard, but not unbreakable.

• Sometimes I’m empty, sometimes I’m full.

• I have legs, but I’m not a person.

Desk

### 5th Riddle

• I’m the world’s sixth largest country by area.

• My government is a constitutional monarchy.

• The Great Barrier Reef is close to my north east coast.

• My name starts and ends with the same letter.

### 6th Riddle

• Sometimes I’m flat and sometimes I’m round.

• I can be many colors.

• Sometimes I squeal and sometimes I pop.

• I can fly but I’m not a bird.

Balloon

### remember… Deduction

• All men are mortals.

• Socrates is a man.

// Socrates is mortal.

### Deduction

• Find the necessary conclusion.

• For this quiz, use “Must be”

or

“Must not be”

### remember… Deduction

• All men are mortals.

• Socrates is a man.

// Socrates must be mortal.

### Deductive reasoning

• Robert is studying to be a doctor.

• All doctors go to medical school.

//…

### Deductive reasoning

• The cloud is white.

• White things are not red.

//…

### Deductive reasoning

• Every day, Bill leaves for work at 7:30.

• It takes him 30 minutes to get to work.

• On Mondays, it takes 10 minutes longer than usual.

• Every Wednesday Bill is late for work.

• Today is Wednesday.

//…

### Deductive reasoning

• Every Saturday afternoon, I go see a movie.

• I only watch dramas on weekends.

• Today I saw an action movie.

//…

### Today must Not be the weekend.

• Induction

• The process of reasoning from evidence to a logically probable conclusion.

• Deduction

• The process of reasoning from general statements (premises) to reach a logically certain conclusion.

-- Albert Einstein