Exercise 3: How to boil water in a microwave oven

Example of good instructions with SAFETY WARNINGS.

(3) How to boil water in a microwave oven.

1. Fill
   a nonmetalic cup or bowl
   with warm water.

2. Insert
   a nonmetalic spoon or stir stick
   diagonally into the cup.
                                         PROBLEM: SAFETY HAZARD
                                         SOLUTION:
                                         WARNING--without this, the
                                         water may appear not to boil,
                                         then vaporize suddenly and
                                         severely burn your face
                                         when you check it.

3. Set
   the microwave oven to
   3 minutes on HIGH

4. Place
   the cup of water into the oven
   and close the door.

5. Start
   the oven.
                                         PROBLEM: SAFETY HAZARD
                                         SOLUTION:
                                         WARNING--never put your
                                         face close to the cup to
                                         check if the water is
                                         boiling.