1. AGENDA KID PRESIDENT VIDEO OBJECTIVES WARM-UP LESSON 1 EXIT CARD

2. OBJECTIVES Classify Real Numbers Understand the Intersection and Union of Sets

3. WARM-UP

4. LESSON 1: CLASSIFYING REAL NUMBERS Set: a collection of objects. Each object is called an element. a)Finite Set b)Infinite Set c)Null or Empty Set

5. SUBSETS OF REAL NUMBERS 1.Natural Numbers a.k.a. “Counting Numbers” 2.Whole Numbers 3.Integers 4.Rational Numbers 5.Irrational Numbers 6.Real Numbers

8. INTERSECTION OF SETS Intersection of Sets A and B  written A∩B *the set of elements that A and B have in common Ex: Find A∩B A = {4, 8, 12, 16} B = {5, 8, 11, 14, 17}

9. UNION OF SETS Union of Sets A and B  written AUB *The set of elements that are in A or B Ex: Find AUB A = {1, 3, 5, 7, 9} B = {1, 2, 3, 4}

10. Determine whether the statement is true or false. Give a counterexample for false statements. Ex: The set of natural numbers is closed under subtraction. Ex: The set of integers is closed under addition.

11. Lesson 1 A – J All, #1 – 5 All CP: #25 Due Tuesday