Rowe (1974) reported that when teachers were trained to increase their wait-time from one second to 3-5 seconds, several changes occurred in students' behavior: the length and number of unsolicited but appropriate responses increased, the number of failures to respond decreased, and the incidence of student-to-student comparisons of data increased. Instructors who are interested in repeating this experiment in their own classrooms can measure their wait-times ("one, one-thousand; two, one-thousand," etc., sufficing for timing purposes) and then deliberately expand these periods of silence-for-thinking both after a question is posed and after an answer has been given. Sharing the concept of wait-time for thinking with the students often enables the teacher to maximize his efforts and gives the class an insight into learning skills.