prologue

act one

  • 1. If they both dig one hole per day for a year, how much extra dirt will Stanley have dug than X-Ray? How many times could that extra dirt fill one of the holes X-Ray digs?
  • 2. Guess how many.
  • 3. Give a guess you know is too high.
  • 4. Give a guess you know is too low.

act two

  • 5. What extra information do you need to answer this question?
  • 6. Decide for yourself how much shorter X-Ray's shovel is than Stanley's.

sequel

  • 7. How short would X-Ray's shovel have to be so that he was doing half of Stanley's work every day?