by Dan Meyer

• 1. Guess whether or not the two ditch diggers will meet.
• 2. If they don't meet, what is the closest you think they will come to each other?

• video — the ditch diggers

• 3. What information would be useful to know here?
• 4. What information doesn't matter?

• video — the coordinates

• video — the complete dig

• 5. What is the closest they come to each other? On what day should they stop digging in their original direction and pick a new one?