1. 6.23 I will model & solve addition equations Solve the problems + 4 = 20 18 - = 12 How did you know the answer?

2. 6.23 I will model & solve addition equations Equation Expression A math problem with an = sign 6 + 4=10 y – 3 = 14 A math problem without an = sign 8 – 3 s + 10

3. 6.23 I will model & solve addition equations Tell if it is an expression or an equation… 3 + 4 11- 5 = 6 2y 3 + m = 9 7x = 14

4. 6.23 I will model & solve addition equations Algebraic Equation Variable An equation with a letter in place of a number The letter that takes the place of a number 3 + x = 15

5. 6.23 I will model & solve addition equations TermA number or variable in an expression/equation. 3 + x = 15 (3 terms)

6. 6.23 I will model & solve addition and subtraction equations Tell the variable in the equation. Tell how many terms in each equation. 2c =8 14 – r = 12 w + 2 = 240

7. 6.23 I will model & solve addition and subtraction equations 2 types of things on the left, it is an + or – problem. Addition or Subtraction Equation Model = KEY = 1 = x

8. 6.23 I will model & solve addition and subtraction equations Solve + and - equation models Step 1 Step 2 Step 3 Step 4 Steps to Success If adding, then subtract if subtracting, then add Do both sides Pull out zero pairs Answer

9. 6.23 I will model & solve addition and subtraction equations Copy the common model

10. 6.23 I will model & solve addition and subtraction equations Equation: x + 4 = 8

11. 6.23 I will model & solve addition and subtraction equations Equation: x - 3 = 7

12. 6.23 I will model & solve addition and subtraction equations Equation: x + 5 = 12

13. 6.23 I will model & solve addition and subtraction equations Equation: x - 2 = 7

14. 6.23 I will model & solve addition and subtraction equations Equation: s – 5 = 13 Model the equation then solve

15. 6.23 I will model & solve addition and subtraction equations Equation: s + 2 = 8 Model the equation then solve

16. Equation: ??????

18. Equation: m + 7 = 13 Model the equation then solve

19. Equation: f + 3 = 10 Model the equation then solve

20. Equation: t + 2 = 6 Model the equation then solve