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1.A 2.B Five Minute Check 1 (over Chapter 2) Replace ● with to make a true sentence. –7 ● 9 A. Replace ● with to make a true sentence. |–12| ● 6 A. Find 15 + (–7). A.22 B. 8 C.–8 D. –22

1.A 2.B Five Minute Check 1 (over Chapter 2) Replace ● with to make a true sentence. –7 ● 9 A.< B.>

1.A 2.B Five Minute Check 2 (over Chapter 2) Replace ● with to make a true sentence. |–12| ● 6 A.< B.>

1.A 2.B 3.C 4.D Five Minute Check 3 (over Chapter 2) Find 15 + (–7). A.22 B.8 C.–8 D.–22

Lesson Menu Main Idea Example 1:Write a Phrase as an Expression Example 2:Write Sentences as Equations Example 3:Write Sentences as Equations

Main Idea/Vocabulary Write verbal phrases and sentences as simple algebraic expressions and equations (2.8.8C) (M7.D.2.1). NEW VOCABULARY: 1.Variable – Represents an unknown value (EX: a, b, c) 2.Equation – A mathematic statement that contains an = sign. EX: 3 + x = 10 3.Numerical Expression – A combination of numbers and operations. EX: 3(4) Algebraic Expression – A combination of numbers, variables, and at least one operation. EX: 4x - 2

Example 1 Write a Phrase as an Expression Write the phrase twenty dollars less the price of a movie ticket as an algebraic expression. Answer: 20 – m Wordstwenty dollars less the price of a movie ticket VariableLet m represent the price of a movie ticket. Expression20 – m

1.A 2.B 3.C 4.D Example 1 A.5 – s B.5s C.5 + s D.s – 5 Write the phrase five more inches of snow than last year’s snowfall as an algebraic expression.

Example 2 Write Sentences as Equations Write the sentence a number less 4 is 12 as an algebraic equation. Answer: n – 4 = 12 WordsA number less 4 is 12. VariableLet n represent a number. Equationn – 4 = 12

1.A 2.B 3.C 4.D Example 2 A.12 – n = 8 B.n + 8 = 12 C.8 – n = 12 D.n – 8 = 12 Write the sentence eight less than a number is 12 as an algebraic equation.

Example 3 Write Sentences as Equations Write the sentence twice a number is 18 as an algebraic equation. Answer: 2a = 18 Wordstwice a number is 18 VariableLet a represent a number. Equation2a = 18

1.A 2.B 3.C 4.D Example 3 Write the sentence four times a number equals 96 as an algebraic equation. A.4x = 96 B.x + 4 = 96 C.4 – x = 96 D.

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REVIEW Write each phrase an an algebraic expression: 1.A number increased by eight 2.Ten dollars more than Grace has n + 8 j + 10

REVIEW Write each sentence as an an algebraic equation: 3. Nine less than a number equals Two points less than his score is 4. 5.Twice the number of miles is One half the regular price is $13. n – 9 = 24 S – 2 = 4 2m = 18 p  2 = 13

Resources Five-Minute Check (over Chapter 2) Image Bank Math Tools Solving Equations Using Models Perimeter Solving EquationsTwo-Step Equations

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