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Daily CSI. Penny Challenge. Objective: Use deductive reasoning to solve a puzzle. Do Now #3 9/11 P.5. 1. 6. 11. 2. 7. 12. 3. 8. 13. 4. 9. 14. 5. 10. 15. Which is the correct penny? NOTE: You cannot look at a real penny!. 1. 6. 11. 2. 7. 12. 3. 8. 13. 4. 9. 14.
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Daily CSI Penny Challenge Objective: Use deductive reasoning to solve a puzzle. Do Now #3 9/11 P.5
1 6 11 2 7 12 3 8 13 4 9 14 5 10 15 Which is the correct penny?NOTE: You cannot look at a real penny!
1 6 11 2 7 12 3 8 13 4 9 14 5 10 15 Answer
Deductive Reasoning Is… • Deductive reasoning is when you start from things you assume to be true, and draw conclusions that must be true if your assumptions are true. For Example All dogs have a tail. Buddy is a dog. Therefore Buddy has a tail.
Deductive Vs. Inductive • Induction is usually described as moving from the specific to the general, while deduction begins with the general and ends with the specific. • Arguments based on laws, rules and accepted principles are generally used for Deductive Reasoning. Observations tend to be used for Inductive Arguments.
Sherlock Holmes • Sherlock Holmes would use deductive reasoning to help solve crimes. • Investigators collect and evaluate • Evidence from a crime scene and \ • Put it in a file • -As more information is collected it gets put in the file and then gets put together like a jigsaw puzzle. Example: Sherlock Holmes could help solve a mystery by making inferences. If Holmes saw a pack of cigarettes by a victim (the victim did not smoke), Holmes can make the assumption that the killer is a smoker. -
Deductive reasoning is the thought process that police investigators use to assemble the pieces of the criminal puzzle and reach a LOGICAL conclusion. • In deductive reasoning investigators utilize LOGICAL AND CRITICAL-THINKING skills to reach a conclusion.