## Prepare a Presentation

## Work Time

# Prepare a Presentation

Analyze the generalizations made by Jack, Marcus, and Lucy. For each one, state whether you agree or disagree. Explain your thinking. Support your explanations with the equations and number lines you worked on earlier in the lesson.

# Challenge Problem

- How can you tell that the sum of two integers will be positive by just looking at the addends?
- How can you tell that the sum will be negative by just looking at the addends?