What do you do as a substitute teacher when students finish their assigned work only minutes after was handed out?  Put together a packet of ideas that includes a list of assignments that can be listed by number on the blackboard. When a student is ready for something new, and the classroom teacher did not provide more work, turn his or her mind to one of the numbered items on the whiteboard. Examples: Find the meanings of these words: emulate, arrogant, ascetic, tolerant, dogmatic. Locate the titles and names of the persons in the President's cabinet. Find the name of the head of state in Britain/France/Russia/Germany . . . In one paragraph, give information about Bjorn Borg/Tiger Woods/Toni Morrison/George W. Bush/Gregor Mendel . . . About what percentage of the Earth's surface is covered by water? Which of these animals do you think will generally live the longest: mosquito, barn…