1. Solve Both Sides Day 1 Teacher Notes
5-3 Variables on Both Sides powerpoint
Solve Both Sides Day 1 Teacher Notes
Supplies
Each student needs a bag of algebra tiles.
Each student needs a bag of algebra tiles.
Students will work individually and in partners.
Revised 8/11/11

2. 5-3 Variables on Both Sides powerpoint
Learning Target
Target 3b I can show the algebraic steps I used to find a solution to a multi-step equation.
Make up an equation with variables on both sides of the equation.
M1.3.A Solve linear equations in one variable.

3. Get a piece of blank paper
5-3 Variables on Both Sides powerpoint
Get a piece of blank paper
Fold it in half hamburger style.
Use the fold to divide the 2 sides of the equation.
This represents the two sides of the equation.

4. 5-3 Variables on Both Sides powerpoint
Launch
Use algebra tiles to solve 2x – 3 = 5
Review of last lesson.

5. Use Algebra Tiles to Solve
2-7 Solving Equations With Algebra Tiles powerpoint
Use Algebra Tiles to Solve
Linda asks Heather and Cindy how many books they read over summer. Cindy read 4 times as many books as Linda read. Heather read 4 more than three times as many books as Linda read. How many books did Cindy read?
What are you asked to find?
Define x:
Write an equation to solve the problem.
x = number of books I read
x + 2 = 5

6. Make the equation with tiles 3x + 4 = 4x
5-3 Variables on Both Sides powerpoint
Make the equation with tiles 3x + 4 = 4x
I mean it!
You try it.
Pass out the algebra tiles.
Is your picture
equivalent to this one?

7. Make this equation with tiles 3x + 4 = 4x
5-3 Variables on Both Sides powerpoint
Make this equation with tiles 3x + 4 = 4x
As a class, discuss the steps.
How can you
start?

8. 5-3 Variables on Both Sides powerpoint
Solve: 3x + 4 = 4x =
4 = x

9. 5-3 Variables on Both Sides powerpoint
✔ Check it: 4 = x 3x + 4 = 4x
Have them try to check it.
Simplify the left side.
Then simplify the right side.
Are they equal? 16 = 16
You try it.
✔ :-)

10. Use Algebra Tiles to Solve
2-7 Solving Equations With Algebra Tiles powerpoint
Use Algebra Tiles to Solve
Linda asks Heather and Cindy how many books they read over summer. Cindy read 4 times as many books as Linda read. Heather read 4 more than three times as many books as Linda read. How many books did Cindy read?
Now that you know what x is, what were you asked to find?
x = number of books I read
x + 2 = 5

11. Solve this one with your partner!
Solve: 2x + 4 = 5x + (-5)
Solve this one with your partner!

12. Solve: 2x + 4 = 5x + (-5)
Let’s remove the same
things from both sides.

13. Solve: 2x + 4 = 5x + (-5)
How can we remove
the red ones?

14. Solve: 2x + 4 = 5x + (-5)

15. Solve: 2x + 4 = 5x + (-5)

16. Solve: 2x + 4 = 5x + (-5)

17. Solve: 2x + 4 = 5x + (-5)

18. Solve: 2x + 4 = 5x + (-5)

19. Solve: 2x + 4 = 5x + (-5)
x = 3

20. 5-3 Variables on Both Sides powerpoint
✔ Check it: x = 3 2x + 4 = 5x + (-5) 10 = 10
You try it.
✔ :-)

21. Team Practice
Solve 3x + 1 = 4x – 3 2(x – 4) = 6 Check your answers. Be prepared to share your work.
3x + 1 = 4x – (x – 4) = 6
-4 = x x – 4 = 3
x = 7

22. 5-3 Variables on Both Sides powerpoint
Debrief
Explain
How do you solve equations with variables on both sides?

23. 5-3 Variables on Both Sides powerpoint
2-7 Solving Equations With Algebra Tiles powerpoint
Learning Target 5 3 1 2 4
Did you hit the target? Target 3b I can show the algebraic steps I used to find a solution to a multi-step equation
Copy the Standard and Target here
Rate your understanding of the target from 1 to 5.
5 is a bullseye!

24. 5-3 Variables on Both Sides powerpoint
Practice
Practice 2.6 ___

25. 5-3 Variables on Both Sides powerpoint
Ticket Out
If you were told to solve, what would you do next?