1. 3 ACT MATH
Mr. d.’s lunch

2. PROCESS OF 3 ACT MATH ACT 1: Identify a Problem
ACT 2: Identify skills and information needed. Create new tools/skills to solve.
ACT 3: Solve the problem and explain your solution.

3. ACT 1: Identify a Problem
Yesterday at lunch Mr. Delinski spent $9.75 between the snack bar and lunch. How many snack bar items did he buy?

4. ACT 2: What information/skills do you need to solve this?
The amount lunch costs.
The amount items from snack bar cost.
What kind of items are available at the snack bar?
Did Mr. delinski buy a double lunch?
SKILLS
4 operations
Model drawing

5. ACT 2: What information/skills do you need to solve this?
MR. DELINSKI’S LUNCH ORDER:
Lunch cost: $2.25
No double lunch.
Each snack bar item costs $0.50.

6. ACT 3: Solve the problem and explain your solution.

7. 2 STEP EQUATIONS STEPS: HINTS:
“undo” addition and subtraction using inverse operations.
“UNDO” Multiplication or Division using inverse operations.
HINTS:
Identify what operations are on the variable side. (Add, Sub, Mult, Div)
“Undo” the operation by using opposite operations.
Whatever you do to one side, you must do to the other side to keep equation balanced.

8. EXAMPLES:
Ex 1.
Ex. 2.
34 = 16 – 3p

9. EXAMPLES:
Ex 3.
Ex. 4.

10. EXAMPLES:
Ex 5.
Ex. 6.

11. EXAMPLES:
Ex 7.
Ex. 8.

12. EXAMPLES:
Ex 9.
Ex. 10.

13. 2 STEP EQUATIONS WITH STORY PROBLEMS
Key Parts:
Variable: What is changing about the situation?/What might not be a constant?
Result/Total: What total do you have?
Other constant: The additional value that contributes to the total.
Methods:
Algorithm
Model Drawing

14. EXAMPLES:
Ex 1.

15. EXAMPLES:
Ex. 2.