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2-4

2-4. Deductive Reasoning. To use the Law of Detachment and the Law of Syllogism. Objective. Vocabulary. Deductive Reasoning – the process of reasoning logically from given statements or facts to a conclusion. Key Concepts. Class Work.

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2-4

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  1. 2-4 Deductive Reasoning

  2. To use the Law of Detachment and the Law of Syllogism Objective

  3. Vocabulary Deductive Reasoning – the process of reasoning logically from given statements or facts to a conclusion

  4. Key Concepts

  5. Class Work If possible, use the Law of Detachment to make a conclusion. 1) If you pass a road test, you will get your driver’s license. Tamara passed her road test. 2) If you arrive at the theater by 2:00PM, you can see the movie. You see the movie.

  6. Key Concepts

  7. Class Work If possible, use the Law of Syllogism to make a conclusion. 3) If the sum of the digits in a number is 9, then the number is divisible by 9. If a number is divisible by 9, then it is divisible by 3.

  8. The Law of Detachment uses deductive reasoning to make a conclusion about a specific example The Law of Syllogism uses deductive reasoning to combine two true conditionals Summary

  9. Exit Problems

  10. Exit PRoblem If possible, use the Laws of Detachment and Syllogism to make a conclusion. 4). If you live in Fairbanks, then you live in Alaska. If you live in Alaska, then you live in the largest state in the United States. Alan lives in Fairbanks.

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