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New Concept: Order of Operation L. 4 “This boy did not follow the order on how to get dressed.” Missing one step in the Order of Operation can be embarrassing. Me llamo Paco.

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LEQ: How do you justify your answer to evaluate numerical expressions using order of operation? Title of the lesson: Lesson 4: Saxon Unit 1: Foundations of Algebra: Using Order of Operation L. 4 Class: Title: Algebra 1 Honors Power Point Created by: Mrs. Rivera srivera.orderofoperation.pp

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Purpose New Concept: Prerequisite for MA.912.A Objectives: In this lesson students learn the order of simplifying expressions. In this lesson students use the order of operation to evaluate expressions and justify their answer.

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Order of Operation Definitions: (Take Notes) Simplify = To simplify an expression means to perform all indicated operations. Homework: Record the new vocabulary in the 3 column graphic organizer that you started: Simplify = Order of Operation = Lesson 4 (1-30) WARNING: Simplifying an expression could produce multiple answers without rules concerning the order in which operations are performed.

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LEQ: How do you justify your answer to evaluate numerical expressions using order of operation? Order of Operation 1. Work inside grouping symbols 2. Simplify powers and roots 3. Multiply and divide from left to right 4. Add and subtract from left to right

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EXAMPLE 1: Simplify and justify each step. Statement Reason (10 x 3) + 7 x (5+4) Given 30 + 7 x 9 Simplify inside the parentheses. 30 + 63 multiply 93 add

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EXAMPLE 2: Simplify and justify each step. Statement Reason 4 3 + 9 ÷ 3 – 2 (3) 2 Given 64 + 9 ÷ 3 – 2 9 Simplify exponents 64 + 3 – 18 multiply and divide from left to right. 49 add and subtract from left to right.

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EXAMPLE 3: Compare: Which expression is greater? 1). (1.5 + 3) ÷ 9 + (3) 3 = 2). (18 + 8) ÷ 2 - 8 ÷ 4 =

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Team-Pair-Solo: Teammates work together to solve a problem. If correct, students advance to pair work for the next problem. If correct, the partners switch roles to solve another problem. Finally, the students advance to solo when all problems are correct.

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Problem # 1 7 +10 × 5 + 10

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Problem # 1 Answer 7 +10 × 5 + 10 = 67

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Problem # 2 (6 +25 − 7) ÷ 6 =

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Problem # 2 Answer Answer = 4

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Problem # 3 45 8(5 − 4) − 3

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Problem 3 Answer Answer = 9

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Problem # 4 2 x 7 – (10 ÷ (9 - 4)) =

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Problem 4 Answer 12

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More Practice 1) 10xy 3 * 8x 5 y 3 = 2) (p 4 ) 4 = 3) (2b 2 ) 4 = 4) 7v 3 * 10u 3 v 5 * 8uv 3 = (worksheet with more practice if time allows)

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Ticket out the door! LEQ: How do you justify your answer to evaluate numerical expressions using order of operation? Make a T-chart with statement and reason to justify the answer to 9 ($1.75) + 5 ($1.50)

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Chapter 3 Lesson 1 pgs. 98-102 What you will learn: Use the Distributive Property to write equivalent numerical and equivalent algebraic expressions.

Chapter 3 Lesson 1 pgs. 98-102 What you will learn: Use the Distributive Property to write equivalent numerical and equivalent algebraic expressions.

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