by Dan Meyer

• 1. How long will it take the sink to fill up?
• 2. Write down a guess.
• 3. Write down an answer you know is too high. Too low.

• video — the faucet leaking

• 4. What information would be useful to know here?

• video — drops per second
• video — ml per second
• image — the capacity of the sink
• image — the cost of water

• video — the sink fills up

• 5. Describe two scenarios where a leaky faucet would take a week to fill something up.