1. W ARM ~U PS : F IND THE MISSING NUMBER 2 +3=15 5 +10=55 3 -2=19

2. WTL: W RITE ABOUT THE STEPS YOU USED TO FIND THE MISSING NUMBER. E VEN IF YOU DID IT IN YOUR HEAD ; WHAT DID YOU THINK ABOUT WHEN SOLVING THIS PROBLEM ?

3. T URN & T ALK WITH YOUR NEIGHBOR. D ID YOU DO THE SAME STEPS OR DIFFERENT ?

4. S OLVING E QUATIONS FROM M ODELS

5. O NE S TEP VS T WO S TEP E QUATIONS Can be solved in one step. Can be solved in two steps. One Step: 2x = 8 Two Step: 2x + 3 = 11 Similarities Use + ― x ÷ to solve. What you do to one side you have to do to the other.

6. WTL: C OMPARE AND C ONTRAST ONE AND TWO STEP EQUATIONS. Turn & Talk with your neighbor.

7. W HY USE M ODELS ? Models help us take complicated equations and break them down into an easier equation.

8. = W RITE AND S OLVE THE EQUATION x x + + + + + x x x x + + + 1) ____________

9. = + + + x x x + + + 2) ____________ x W RITE AND S OLVE THE EQUATION

10. = 3) ______________ x x x x x +++ + x x x W RITE AND S OLVE THE EQUATION

11. + + + 4) ___________ x x + + + x + + + + + + W RITE AND S OLVE THE EQUATION

12. 5) ______________

13. 6) ______________

14. 7) ______________ kk k 1 15

15. What is the first step in finding the value of x? A. Add 6 pandas to each side of the model. B. Subtract 6 pandas from each side of the model. C. Divide the pandas equally among the 3 x’s. D. Subtract 3 x’s from each side of the model. = x 8) The model represents 3x = 6

16. What is the second step in finding the value of x? A. Divide the pandas equally among the 2 x’s. B. Subtract 2 x’s from each side of the model. C. Add 3 pandas to each side of the model. D. Subtract 3 pandas from each side of the model. = 9) The model represents 2x + 3 = 5 xx

17. = xxx xx - - - - + What is the first step in finding the value of x? 10) The model represents 5x – 4 = 4