FRIDAY, AUGUST 24, 2012. HOMEWORK CHECK Please pass in your write-ups then check your answers to the homework from Wednesday night: p. 81-82 #42-50 even.

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Presentation transcript:

FRIDAY, AUGUST 24, 2012

HOMEWORK CHECK Please pass in your write-ups then check your answers to the homework from Wednesday night: p #42-50 even 42) True 44) False 46) One 48) Six 50) One

§2-3 DEDUCTIVE REASONING

EXAMPLES Law of Detachment If a vehicle is a car, then it has four wheels. A sedan is a car. What valid conclusion can you make? If two numbers are odd, then their sum is even. 3 and 5 are odd numbers. What valid conclusion can you make? If I watch TV, I will not do my homework. I did my homework. Can you conclude that I did not watch TV?

EXAMPLES Law of Syllogism If Elena takes the car to the store, she will stop at the post office. If Elena stops at the post office, she will buy stamps. What valid conditional statement could you write?

PARTNER ACTIVITY Work with your seat partner to complete the worksheet after viewing the video. Skip 1a and 1d.