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.

2. Translate the following into an algebraic expression: Four less than three times the number of snow days.

3. Evaluate the following expression: 6c + 4 – d if c = 2 and d = 5

TODAY’S OBJECTIVE: 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

PRACTICE TRANSLATING EXPRESSIONS: 1. Which of the following phrases is equivalent to 4 +

9x? a. Four more than nine playersb. Nine more than four playersc. Four times more than nine playersd. 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

REVIEW Evaluating Expressions Video:

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

EVALUATING AN EXPRESSION Order of Operations: Please Excuse My

Dear Aunt Sally! The Order of Operations holds for

algebraic expressions, just as it does for other expressions.

Write an expression for the following:

1. Justin has 3 more than 2 times as many books as Erin.

2. Tommy practices the guitar 3 times as much as Tonya.

3. 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)

FEELING LIKE YOU NEED MORE PRACTICE

FEELING CONFIDENT

INSTANT MESSAGING PRACTICE1. Work with elbow partner2. Send instant message to elbow partner

with algebraic expression. The algebraic expression should have one variable and should have the value of the variable.

3. Partner evaluates the expression and sends back the results.

4. After you’ve done it twice, add a second variable to your expression.

TRANSLATE THE FOLLOWING INTO AN ALGEBRAIC EXPRESSION1. Seven dollars more than John has2. Mrs. Ruiz had 50 pens and gave 2 to

each of her students3. Evaluate (x – y) + 3 (-2) if x = -4 and y

= 54. Evaluate 3(a – b) ÷ 2 if a = 8 and b =

45. Evaluate (6 + 7c) ÷ (3d – 8) if c = 2

and d = 6.

PRACTICE: 1. Computers2. Feeling like you need more help: read

and work examples 1-6 on pgs. 270-272

3. Feeling confident: work problems in the textbook: pg. 273-274: 12-19; 23-31

COMMON CORE PREP! 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.

EXIT TICKET: 1. Which of the following phrases is equivalent to 3

+ 7xa. Three more than seven studentsb. Seven more than three studentsc. Three more than seven playersd. 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