At the time of this writing the authors of Instructional Design: System Strategies have a combined experience of more than 75 years in the ?eld of instructional technology in its various guises including Educational Media, Instructional Media, Educational Media and Technology, Instructional Media and Technology, Instructional Communication, and Audiovisual. This experience includes colleges and universities, the military as instructors and as consultants; public education as classroom teachers, consultants, and conductors of workshops and seminars; with business and industry as corporate trainers and trainers of trainers.