MODELING WITH A NUMBER LINE

1. 1. What is the arrow pointing left indicating?

2. 2. What does the arrow pointing right mean?

3. 3. Why does the left arrow start at zero, but the right arrow doesn't?

4. 4. What is the final answer to this problem?

1. 1. Explain why the problem -1 + 4 ended up being a positive answer, but when I changed the problem to

   1 + (-4) the answer was negative.

2. 2. How come when both numbers were negative in the problem -1 + (-4) the answer stayed negative?

Reflect on your learning...Type a few thoughts describing some of the things you learned today.