1. 1.1 Evaluate Expressions

2. Let’s assume x = ∎ and y = Δ.
How would we draw a picture of 2x + 5x?
How would we draw a picture of 3x + 2y?
How would we draw a picture of 2x2 + 5y?

3. What is the value of 3x + 2y? _____
Let’s assume x = ∎ and y = Δ. Now with your partner roll the die twice to determine values for x and y. x = ____ y = ____
 What is the value of 2x + 5x? _____
What is the value of 3x + 2y? _____
What is the value of 2x2 + 5y? _____

4. Let’s think about the expression 4x + y2
Let’s think about the expression 4x + y2. Which of the vocabulary terms could we use to describe the expression above?
Variable
Power
Expression
Base
Coefficient
Exponent

5. Let’s think about the expression 4x + y2.
Variable – A letter used to represent one or more numbers

6. Let’s think about the expression 4x + y2.
Expression – Numbers, variables, and operations; an algebraic phrase

7. Let’s think about the expression 4x + y2.
Coefficient – A number placed before, and being multiplied by, the variable(s)

8. Let’s think about the expression 4x + y2.
Power – An expression that represents repeated multiplication of the same factor

9. Let’s think about the expression 4x + y2.
Base – In a power, the factor being multiplied by itself

10. Let’s think about the expression 4x + y2.
Exponent – In a power, the number of times the base is used as a factor

11. (Hint: it’s not that kind of Volume!)

12. Volume Activity: Take 5 minutes to use the Scotch tape, scissors, and graph paper to construct a prism (3D rectangular object) with the Volume indicated on your index card. Identify the Length, Width, and Height of your object. Write an algebraic expression using Length, Width, and Height that represents the Volume of your object.