1. Lets Add Integers Another Way: Using symbols or 2-colored counters

2. Adding Integers with Counters RED = NEGATIVE (-) YELLOW = POSITIVE (+)

3. Adding Integers with Counters Problem #1  -4 + 5 = ? A.Count out _____ red counters B.Count out _____ yellow counters C.Remove each PAIR of red/yellow counters (remember these are called ZERO PAIRS). D.Count the remaining red or yellow counters. E.What is your final answer? _____

4. Adding Integers with Counters Problem #2  5 + (-7) = ? A.Count out _____ red counters B.Count out _____ yellow counters C.Remove each PAIR of red/yellow counters (remember these are called ZERO PAIRS). D.Count the remaining red or yellow counters. E.What is your final answer? _____

5. Adding Integers with Counters Problem #3  -5 + (-2) = ? A.Count out _____ red counters B.Count out _____ yellow counters C.Remove each PAIR of red/yellow counters (remember these are called ZERO PAIRS). D.Count the remaining red or yellow counters. E.What is your final answer? _____

6. Adding Integers with Counters Problem #4  5 + (-8) + 4 = ? A.Count out _____ red counters B.Count out _____ yellow counters C.Remove each PAIR of red/yellow counters (remember these are called ZERO PAIRS). D.Count the remaining red or yellow counters. E.What is your final answer? _____

7. Adding Integers with Counters Problem #5  -4 + 3 + (-2) = ? A.Count out _____ red counters B.Count out _____ yellow counters C.Remove each PAIR of red/yellow counters (remember these are called ZERO PAIRS). D.Count the remaining red or yellow counters. E.What is your final answer? _____

8. Show what you know… At the bottom of your paper, write an explanation of how you would solve the given problem using 2- color counters OR +/- symbols. Remember to be specific and thoughtful. Problem  8 + -6 = ?

9. More practice with counters… Adding integers with counters