1. DO NOW
In your own words, define the terms VARIABLE and EXPRESSION.

2. Cell Phone Activity Recap
What did I know
What did I not know

3. Variables and Expressions
Lesson 0-1

4. Operations Gallery Walk

5. The difference of 9 and a number n.
The sum of 57 and a number b.
The quotient of 8 and twice a number z.
The sum of a number g squared and a number p cubed.

6. Pair Up Activity With your partner, choose 1 or 2.
If you are the partner who is 1, write a verbal expression just like we were doing in class.
If you are the partner who is 2, write the algebraic expression that represents the verbal expression your partner wrote.
SWITCH!

7. Why do we learn variables?
With variables, we are able to explain the situations around us.
Variables are always used to represent numbers that change throughout a process.
Examples include income, expenses, total distance traveled, depth from surface, etc.
Word problems are our way of practicing using variables.

8. You are making chocolate for your friends
You are making chocolate for your friends. A mold for a chocolate bar costs $22.50 and each chocolate bar costs $5. Write an algebraic expression for the total cost of making x chocolate bars. You make 8 chocolate bars. Find the total cost.

9. A salesperson at an electronics store makes 15% commission on each sale and an additional $250 each week. Write an algebraic expression to represent the amount of money the salesperson makes each week. How much money will they make if they sell two TVs at $800 each?

10. The Williams family are getting ready to make a 640-mile car trip
The Williams family are getting ready to make a 640-mile car trip. In general, their car can drive 160 miles on 5 gallons of gasoline. How many gallons of gasoline will they use for the trip? They started out with 4 gallons of gasoline in their car, and gasoline is $2.29 per gallon. How much money will you spend on gasoline on the trip?

11. Write a word problem that can be modeled by the algebraic expression 17 + 5x

12. Independent Practice 1-1 Practice Sheet

13. Exit Slip What is something you learned today?
What is something you are still unclear about?
What is one question you have for me about this lesson?