1. DO NOW-on NEW handout sheet!! Directions: Write as a mathematical phrase 1.Eight more than a number 2.The difference between ten and seven 3. Two multiplied by a number

2. Announcements Pick up a Warmup/hw/objective Weekly sheet every Monday and keep it for the week! Pencils-red bucket; sharpener-on desk Homework/Classwork-HARLAN SITE HW and Weekly sheet handed in Fridays BIG GOAL-5 week assessments

3. Objective Students will be able to (SWBAT): Write mathematical expressions for verbal expressions, and vice versa Use variables in algebraic expressions

4. Homework Variables and Expressions worksheet #

5. Cornell Notes-New Vocab 1) one or more numbers or variables, and 2) one or more arithmetic operations. Examples: x - 3 3 2n -A letter that represents a numerical value -A number that comes directly in front of a variable (attached to it) Algebraic expression Variable Coefficient

6. In expressions, there are many different ways to write multiplication. 1)ab 2)a b 3)a(b) or (a)b 4)(a)(b) 5)a x b We are not going to use the multiplication symbol any more. Why?

7. Division, on the other hand, is written as: 1) 2) x ÷ 3

8. DO NOW-on Weekly sheet!! Directions: Write as a phrase with words 1)8x 2)4a-6 3)n² 4)5 ÷ (b+1)

9. Announcements Checking hw-first 5 minutes BIG GOAL-up on wall

10. Objective Students will be able to (SWBAT): Write mathematical expressions for verbal expressions, and vice versa Use variables in algebraic expressions

11. Homework Variables and Expressions worksheet #

12. Throughout this year, you will hear many words that mean addition, subtraction, multiplication, and division. Complete the table with as many as you know.

13. Here are some phrases you may have listed. The terms with * are ones that are often used.

14. Write an algebraic expression for 1) m increased by 5. m + 5 2) 7 times the product of x and t. 7xt or 7(x)(t) or 7 x t

15. 3) 11 less than 4 times a number. 4n - 11 4) two more than 6 times a number. 6n + 2 5) the quotient of a number and 12.

16. Which of the following expressions represents 7 times a number decreased by 13? 1.7x + 13 2.7x - 13 3.13 - 7x 4.13 + 7x Answer Now

17. Which one of the following expressions represents 28 less than three times a number? 1.28 - 3x 2.3x - 28 3.28 + 3x 4.3x + 28 Answer Now

18. Weekly Sheet DO NOW: Write an algebraic expression for: 1)Ten less than five times a number 2)The sum of a number and two, squared 3)Twenty more than four times the sum of six and a number Objective/Learning Goal: SWBAT: -Translate complex algebraic and verbal expressions -Create verbal expressions Homework: Variable and Expression sheet- FINISH!!

19. Write a verbal expression for: 1) 8 + a. The ratio of m to r Do you have a different way of writing these? The sum of 8 and a 2)

20. Which of the following verbal expressions represents 2x + 9? Answer Now 1.9 increased by twice a number 2.a number increased by nine 3.twice a number decreased by 9 4.9 less than twice a number

21. Which of the following expressions represents the sum of 16 and five times a number? Answer Now 1.5x - 16 2.16x + 5 3.16 + 5x 4.16 - 5x

22. When looking at the expression 10 3 Base Exponent or Power 10 3 10-foundation number; number that is sitting 3-number floating in the air means 10 10 10 10 3 = 1000

23. How is it said? 21212 2323 2n 7 Two to the first power Two to the second power or two squared Two to the third power or two cubed Two times n to the seventh power

24. Which of the following verbal expressions represents x 2 + 2x? Answer Now 1.the sum of a number squared and twice a number 2.the sum of a number and twice the number 3.twice a number less than the number squared 4.the sum of a number and twice the number squared

25. Which of the following expressions represents four less than the cube of a number? Answer Now 1.4 – x 3 2.4 – 3x 3.3x – 4 4.x 3 – 4

26. Create your own expressions Directions: 1)By yourself, on a separate sheet of paper: come up with 7 verbal expressions like the ones we have done in class 2)Find a partner/group of three and translate each other’s words into algebraic expressions 3)Trade back and check each other’s work-give a grade! 4)When finished, you may work on the HW sheet

27. Evaluate. 2 1 22 2 2 = 4 2323 2 2 2 = 8 2n 7 We can’t evaluate because we don’t know what n equals to!!

28. Is 3 5 the same as 5 3 ? Evaluate each and find out! 3 5 = 3 3 3 3 3 = 243 5 3 = 5 5 5 = 125 243 ≠ 125 They are not the same!