Today s tongue twister
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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.

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Today’s Tongue Twister!~

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Today s tongue twister

Today’s Tongue Twister!~

Four furious friends fought for the phone.


Today s tongue twister

Sherlock Holmes


Logic

Logic


Today s tongue twister

M


De duction

Deduction

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


De duction1

Deduction

  • All men are mortals.

  • Socrates is a man.

    // Socrates is mortal.


De duction2

Deduction

  • All squares are rectangles.

  • Rectangles have four sides.

    // All squares have four sides.


In duction

INduction

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


In duction1

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

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

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

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.


1 st riddle

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.


You re probably

You’re probably …….

BBBBBBBBB

Bat


2 nd riddle

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.


You re probably1

You’re probably…….

Tennis Ball


3 rd riddle

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.


You re probably2

You’re probably…….

Zebra

Tennis Ba


4 th riddle

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.


You re probably3

You’re probably………

Desk


5 th riddle

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.


You re probably4

You’re probably ………


6 th riddle

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.


You re probably5

You’re probably ………

Balloon


Remember deduction

remember… Deduction

  • All men are mortals.

  • Socrates is a man.

    // Socrates is mortal.


Deduction

Deduction

  • Find the necessary conclusion.

  • For this quiz, use “Must be”

    or

    “Must not be”


Remember deduction1

remember… Deduction

  • All men are mortals.

  • Socrates is a man.

    // Socrates must be mortal.


Deductive reasoning

Deductive reasoning

  • Robert is studying to be a doctor.

  • All doctors go to medical school.

    //…


Robert must be studying in medical school

Robert must be studying in medical school.


Deductive reasoning1

Deductive reasoning

  • The cloud is white.

  • White things are not red.

    //…


The cloud must not be red

The cloud must not be red.


Deductive reasoning2

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.

    //…


Bill must be late for work

Bill must be late for work.


Deductive reasoning3

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

Today must Not be the weekend.


Today s tongue twister

  • 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.


Today s tongue twister

-- Albert Einstein


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