Do Now. You have 5 minutes. You DO NEED TO write the questions today!

1. Translate the following into an algebraic expression: twenty-four more cookies than Hallie made. Translate the following into an algebraic expression: Four less than three times the number of snow days. Evaluate the following expression: 6c + 4 – d if c = 2 and d = 5 Do Now. You have 5 minutes. You DO NEED TO write the questions today!

2. SWBAT practice and master writing and evaluating expressions. First: What is a variable video: http://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/v/what-is-a-variable Today’s objective:

3. Practice translating expressions: • Which of the following phrases is equivalent to 4 + 9x? • a. Four more than nine players • b.Nine more than four players • c.Four times more than nine players • d.Four more than nine times the players 2. Which of the following phrases is equivalent to 15 + D • a. Fifteen more than Devon has • b. Fifteen times what Devon has • c. Fifteen more than 3 times what Devon has • d.Fifteen less than Devon has

4. Evaluating Expressions Video: http://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/v/expressions-with-two-variables review

5. Order of Operations: Please Excuse My Dear Aunt Sally! The Order of Operations holds for algebraic expressions, just as it does for other expressions. Evaluating an expression

6. Feeling Like you Need more practice Feeling confident Write an expression for the following: • Justin has 3 more than 2 times as many books as Erin. • Tommy practices the guitar 3 times as much as Tonya. • Translate the following into words: 3x - 1 Wesley paid $10 for a Sports Illustrated subscription. He then has to pay $2 for each month’s issue. 1. Write an expression to find the total amount he will pay for m months. 2. How much will he have to pay if he has the subscription for a year (12 months)

7. Work with elbow partner Send instant message to elbow partner with algebraic expression. The algebraic expression should have one variable and should have the value of the variable. Partner evaluates the expression and sends back the results. After you’ve done it twice, add a second variable to your expression. Instant messaging practice

8. Seven dollars more than John has Mrs. Ruiz had 50 pens and gave 2 to each of her students Evaluate (x – y) + 3 (-2) if x = -4 and y = 5 Evaluate 3(a – b) ÷ 2 if a = 8 and b = 4 Evaluate (6 + 7c) ÷ (3d – 8) if c = 2 and d = 6. Translate the following into an algebraic expression

9. Computers Feeling like you need more help: read and work examples 1-6 on pgs. 270-272 Feeling confident: work problems in the textbook: pg. 273-274: 12-19; 23-31 Practice:

10. Justine has 6 blue shirts, 2 red shirts, and 5 green shirts in her closet. On Monday, she randomly chooses a blue shirt. She does not put the blue shirt back in the closet. Step A What is the probability that Justine will randomly select a green shirt on Tuesday? Step B Use what you know about probability to explain how you determined the probability that Justine will randomly select a green shirt on Tuesday. Use words, numbers, and/or symbols in your explanation. Common Core Prep!

11. 1. Which of the following phrases is equivalent to 3 + 7x a. Three more than seven students b. Seven more than three students c. Three more than seven players d. Three more than seven times the players 2. Each month Sarah saves $15 towards paying for a Grizzlies jersey. Which expression could be used to find the total amount saved after m months? a. 15m b. 5m + 1 c. 15 + m d. 15 + 15 Exit Ticket: