Algebraic Expressions

Objectives

•I will model algebraic expressions with popsicle stick and cubes.

•I will replace a variable with a given value and then evaluate the answer.

Write a variable expression for each model. Squares represent ones. Rectangles represent a variable.

1. 2.

3.

SPI 0606.1.5 Model algebraic expressions using algebra tiles.

Write an algebraic expression for this model and write the operations performed in each step.

Evaluate each algebraic expression

1. 3m; where m = 9

2. 4y + 6; where y = 6

3. 2 (4e); where e = 5

Evaluate each algebraic expression

4. 3pq; where p=3 and q = 5

5. 7n – (m + 18); where

n = 4 and m = 10

6. 5(6 • 2) + 8m; where m = 2

Create your own expression for your partner to model/evaluate. The partners will have to model it correctly and write the operation that was performed.