Instructional Development Timeline
World War II
  • military personnel had to be quickly trained on thousands of tasks critical for survival
  • mediated Instruction
    • training films, still photos, audio recordings, transparencies, slides, instructional simulations
    • Division of Visuals Aids for War Training within the U.S. Office of Education
      • 457 sound motion pictures
      • 432 silent filmstrips
      • 457 instructors’ manuals
  • predisposing the military toward innovative instructional systems concepts

Edgar Dale (1946)

  • developed the Cone of Experience. The purpose of the cone was to provide a visual example of various teaching levels and materials