1. Lesson 7.1 Writing Algebraic Expressions 1

2. Warm Up-Matching OBJECTIVE: SWBAT write an algebraic expression from a written expression. Agenda 2 Choose the numerical expression that best matches each written expression. a) the product of 9 and 3 b) 9 subtracted by 3 c) 9 divided by 3 d) the sum of 3 and 9 1) 2) 3) 4) Written Expression Numerical Expression LANGUAGE OBJECTIVE: SWBAT discuss the difference between algebraic and written expressions.

3. Agenda: 1) Warm Up 2) Launch 3) Explore 4) Practice 5) Assessment 3 OBJECTIVE: SWBAT write an algebraic expression from a written expression. LANGUAGE OBJECTIVE: SWBAT discuss the difference between algebraic and written expressions. Matching-Independent Operations to Words-Groups Mini Lesson-Whole Class Centers Exit Slip-Independent and Partners Agenda

4. Launch-Operations to Words 4 Agenda AdditionSubtractionMultiplicationDivision Directions: Put each word from the list into the operation’s box that it most likely expresses. plus sum more than in all increased by minus less than difference subtract decreased by times of product each multiplied divided per quotient twice ratio less factors separate PC Users

5. Launch- Mac User 5 Agenda AdditionSubtractionMultiplicationDivision Directions: Put each word from the list into the operation’s box that it most likely expresses. plus sum more than in all increased by minus less than difference subtract decreased by times of product each multiplied divided per quotient twice ratio less factors separate plus sum more than in all increased by minus less than difference subtract decreased by times of product each multiplied divided per quotient twice ratio less factors separate Next Slide

6. Launch- PC User 6 Agenda AdditionSubtractionMultiplicationDivision Directions: Put each word from the list into the operation’s box that it most likely expresses. plus sum more than in all increased by minus less than difference subtract decreased by times of product each multiplied divided per quotient twice ratio less factors separate plus sum more than in all increased by minus less than difference subtract decreased by times of product each multiplied divided per quotient twice ratio less factors separate AdditionSubtraction Multiplication Division Click below to reveal the words for each operation. Click each word to place it in the correct operation

7. Explore-Mini Lesson 7 Agenda The product of ten and seven. The product of ten and five. Write the following as a The product of ten and a number. Think…what can we use to represent a number when we don’t know the number? VARIABLE or Click to reveal next part numerical expression.

8. Explore 8 Agenda Write the following as a or Click to reveal next part Numerical Expression: an expression containing one or more numbers and operations i.e. 4+7. numerical expression. Click to Return

9. Explore- Mini Lesson 9 Agenda The product of ten and a number. Variable: a letter or symbol that represents an unknown quantity. Now, for my next trick, I will introduce a new way to write multiplication. A number written next to a variable means multiplication. Write as a algebraic expression.

10. 10 This new expression, 10n, is called an Algebraic Expression. Why do mathematicians call them Algebraic Expressions? Algebraic Expression: an expression containing at least one variable. Numerical Expression: an expression containing one or more numbers and operations. Explore- Mini Lesson Click to reveal next part Agenda

11. 11 Written Expression: an expression written with words. Variable: any letter in the alphabet or symbol that represents an unknown quantity. Explore- Mini Lesson The sum seventeen and number Three times the difference of nine and seven Agenda

12. 12 Write an algebraic expression for the problems below. a) The sum of five and a number. b) The quotient of a number and six. c) Twenty decreased by two times a number. Practice- Whole Class Important!!!! Identify the operation(s) by underlining key words. Agenda

13. 13 Write an algebraic expression for the problems below. d) The sum of ten and a number. e) The quotient of a number and twelve. f) Eleven decreased by five times a number. Practice- Whole Class Important!!!! Identify the operation(s) by underlining key words. Agenda