- 
  
  More cities are being built and more people are moving into them. United States was also becoming a major industrial power as it grew through the industrial revolution.
- 
  
  Individualized instructional plans were developed. Student learning contracts and mastery learning emerged. Pressey invented the teaching machine to lighten the burden on teachers.
- 
  
  Period of slow progression towards the changing of instructional design.
- 
  
  Education focused on military training.
- 
  
  Baby boom period. The launch of Sputnik encouraged more money to be invested in education. Behaviorism took shape.
- 
  
  Civil Rights Act outlaws discrimination. Many instructional systems developed and defined.
- 
  
  Apple I computer released. IBM 1500 computer system developed for assisted instruction. Cognitive models continued to dominate.
- 
  
  Using computers to evaluate the performance of individuals and analyzing possible reasons for discrepencies.
- 
  
  Learning environments based on constructivism. Unification of data though the creation of the world wide web.
-