Describes results of survey of media service directors at public universities in Ohio to determine the expected longevity of audiovisual equipment. Use of the Delphi technique for estimates is explained, results are compared with an earlier survey done in 1977, and use of spreadsheet software to calculate depreciation is discussed. (LRW)

Individualized instruction optimizes time spent by student and teacher for the greatest benefit of both. Most instructional time is currently spent lecturing. By replacing live lectures with recorded lectures, the teacher is free to provide personal, individualized instruction to each student. An effective one-to-one student-teacher ratio is…