1. November Math 102
Objective: Students will be able to evaluate algebraic expressions
Aim: How do we use substitution, along with order of operations, to help us evaluate expressions?
Prior knowledge: In the expression, 4y + 3, what is the coefficient, the variable and the constant?

2. Evaluate 4y + 3, when y = 2
Replace y with 2 in the expression.
4(2) + 3
Simplify using the order of operations.
What do we do first, add or multiply?
4(2) = 8
8 + 3 = 11
So, 4y + 3 = 11 when y =2

3. Evaluate b2 - 4, when b = 3
Replace b with 3 in the expression.
Simplify using the order of operations.
What do we do first, add or multiply?
So,

4. Evaluate
,when z = 3

5. Independent practice:
Go to page 403 and do problems 18 – 21 while Mr. Brooks stops by your desk to answer any questions.
Homework: Page 404, problems