Modeling Two-Step Equations with Algebra Tiles

What equation do the algebra tiles show?

• -2x + 2 = x + 4

• 2x + 2 = x - 4

• 2x - 2 = -x + 4

• -2x - 2 = x + 4

Pick the equation modeled.

• 3x + 1 = x - 5

• -3x + 1 = x - 5

• 3x + 1 = x - 3

• 3x - 1 = x - 5

Look at the model. Which of the following algebraic expressions could it represent?

• 5x - 1 + 2x + 3

• 5x + 5 +2x + 3

• 5x + 1 + 2 + 3

• 5x - 1 + 2x + 3x

• A

• B

• C

• D

Write an equation that fits the algebra tile model.

(Use the "minus" - sign for negatives)

Solve for x in the equation above. You may use Algebra tiles to help you. 

• 1

• 3

• 5.67

• 4 = 10

What would you do to isolate the variable?

• Take away 6 positive unit tiles from both sides of the equation.

• Add 2 negative unit tiles to both sides of the equation.

• Add 6 negative unit tiles to both sides of the equation.

• Add 6 positive unit tiles to both sides of the equation.

Look at the algebra tiles modeled for this equation. Using the letter [y] for the variable term. Just type in the equation. DO NOT USE THE SPACE BAR

Mathematical Equivalence

OFF

Write the equation for the model. (white square=1 rectangle=x red square = -1)

• 7=x+3

• 7=x+(-3)

• 7=-x+3

• -7=x-3

Look at the algebra tiles modeled for this equation. Using the letter [y] for the variable term. Just type in the equation. DO NOT USE THE SPACE BAR

Mathematical Equivalence

OFF