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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!~ Four furious friends fought for the phone.
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.
You’re probably ……. 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.
You’re probably……. 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.
You’re probably……. 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.
You’re probably……… 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.
You’re probably ……… 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. //…
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.
