1. Bell Work If I was President, then…. If I can change the world, then…. If I have a lot of money, then…..

2. Chapter 2.1 Conditional Statements 3.0 Construct and judge the truth of a logical argument and give counterexamples

3. Vocabulary Conditional statement= if-then statement Hypothesis = the sentence/phrase following “if”. It contains the information that is assumed to be true. Conclusion = the sentence/phrase following “then”. It contains the information to be proven

4. Examples of Conditional Statement: “If the Chargers won the first game, then they will win the Superbowl” “If the everyone did their homework, then Mr. Liu will host a party Friday”

5. Interwrite Activity/Whiteboard: Find the Hypothesis and Conclusion Blue = hypothesis Yellow = Conclusion 1) If it’s warm this afternoon, then the school will provide free Gatorades

6. Interwrite Activity/Whiteboard: Find the Hypothesis and Conclusion Blue = hypothesis Yellow = Conclusion “If a person drives a Porsche, then that person is rich”

7. Interwrite Activity/Whiteboard: Find the Hypothesis and Conclusion Blue = hypothesis Yellow = Conclusion “If a girl is blushing when talking to you, you know she likes you”

8. Do these on your Cornell notes Find the hypothesis and conclusion 1)If a figure is a rectangle, then it has four right angles 2)If two lines intersect to form right angles, then the lines are perpendicular

9. Vocabulary Truth value = The truth value of a statement is “true” or “false” according to whether the statement is true or false, respectively Note: You will need to provide a counterexample to prove a statement false Converse = you switch the hypothesis and conclusion in the conditional statement

10. Converse Example 1) If you want to be fit, then you want to get plenty of exercise

11. Whiteboard Find the converse: Write it on the white board “If you scored 81 points, then your team wins the game”

12. Put this in your Cornell Notes Find the Converse “If an angle is a straight angle, then its measure is 180” If x+20=32, then x=12

13. Turn sentence into conditional statements Write each sentence as a conditional statement 1) A square has four congruent sides 2) Good weather makes a picnic enjoyable 3) Good grades comes from studying hard Note: 1)Locate the verb first 2)before the verb is the hypothesis 3)after the verb is the conclusion

14. Activity (5 min) Write the summary about this section in your Cornell note. Some questions to consider: – What is the topic about? – What did I learn from this lesson? – How does this relate – What questions do I have?

15. Classwork P 83 #2, 4, 6, 9, 11, 15, 23, 26