Need more? These 10 tips are offered by 10 different teachers and they differ from the previous tips in that each includes a first-person narrative by the teacher, which provides important context. For example, Nancy Landis, who teaches grade four students, uses a stopwatch as a “countdown” device. “I never need to say a word; they regulate themselves. They know the time that has accumulated on the watch is the time they ‘owe’ before they can have recess.”