1. Solving Equations Using Algebra Tiles
a unit tile and a variable tile; we can use tiles to represent an expression
unit tile =
one yellow tile represents + 1
a long tile represents a variable such as the letter n
variable tile =
What algebraic expression do these tiles present?
= 2n + 5

2. Steps for solving equations:
Mr. Pomeroy collects model cars. His friend gives him 2 cars. Mr. Pomeroy then has 7 cars. How many cars did he have at the start?
1) Make an equation
n + 2 = 7
2) On the left side, put tiles to represent n On the right
side put tiles to represent 7.
3) Next, make the two sides equal by isolating the variable.
Remove the 2 unit tiles from the left and do the same to
the right in order to get the solution.
n = 5

3. Try it! Two more than three times a number is fourteen. Step 1:
Hint: arrange units on right side
into 3 even groups when
multiplication is used
Step 4:
n = 4

4. Work in text pages
41 – 42
Questions 1 to 7