act one

  • 1. Which do you think is cheaper: a shower or bath? Why?

act two

  • 2. What information will you need to know to solve the problem?


  • 3. How would the situation have to change for the answer to reverse itself?
  • 4. How long of a shower can he have with the same amount of water he used for the bath? [via Twitter user park_star]
  • 5. Which is cheaper for you? Collect data on your own shower and bath usage.
  • 6. Which is cheaper for your class? Average the data from all your classmates.