1. 6.2 – Patterns and Expressions
Grade 5
Objective: Use patterns to show relationships and evaluate algebraic expressions.

2. Set the Purpose
Today you will be learning to use patterns to write algebraic expressions to describe relationships.
Connect: Point out relationships seen in everyday life.
For ex: The number of miles driven and the amount of gas needed. Any other examples?

3. Pose the Problem
Lulu decides to buy 3 party favors for each of the friends she invites to her party. Her mother said she can invite from 1 to 4 friends. How many party favors will she need?
Number of Favors
Number of Friends

4. Word Problem
Ahmed and Mohammed have the same birthday, but Mohammed is 6 years older. In the table, A is Ahmed’s age and A + 6 is Mohammed’s age. Complete the table. 5 3 A 14
A + 6

5. Solve Evaluate each expression for n = 4 and n = 2. 40/n = 3.5 + n =
6 x n =