CS 2010 Lab 3 Instructor Plan

1. Choose a representation for toast:
   • kind of bread: 'white or 'wheat
   • toastedness, on a scale of 0 to 10
2. Implement yummy-toast?. Toast is yummy when it's white bread toasted to a level between 6 and 8 inclusive. (You or your class may have a different opinion. Define "yummy" however you like.)
3. Choose a representation for bagels:
   • whether the bagel is sliced
   • whether the bagel has cream cheese
   • toastedness, on a scale of 0 to 10
4. Implement yummy-bagel? (appropriately defined).
5. Define the datatype for bread (which is toast or bagel).
6. Implement yummy-bread?.
7. Choose a representation for toasters:
   • bread in the toaster
   • whether the toast/lever is 'down or 'up
8. Implement should-turn-on-toaster?. Don't turn on the toaster if it's already on, or if the bread is a bagel has cream cheese or isn't sliced, or if the bread is toasted more than level 6 already. (The implementation will involve new functions on bread, etc.)

Try to get at least as far as yummy-bread?. You probably won't have time to get through should-turn-on-toaster?.