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Educational technology is the use of both physical hardware and educational theoretics.

"Virtual" is used in that broader way to describe a course that is not taught in a classroom face-to-face but through a substitute mode that can conceptually be associated "virtually" with classroom teaching, which means that people do not have to go to the physical classroom to learn.Further large-scale use of technologies was employed in training soldiers during and after WWII using films and other mediated materials, such as overhead projectors.The concept of hypertext is traced to the description of memex by Vannevar Bush in 1945.Given this definition, educational technology is an inclusive term for both the material tools and the theoretical foundations for supporting learning and teaching.Educational technology is not restricted to high technology.In the mid 1960s Stanford University psychology professors Patrick Suppes and Richard C.Atkinson experimented with using computers to teach arithmetic and spelling via Teletypes to elementary school students in the Palo Alto Unified School District in California.However, many terms and concepts in educational technology have been defined nebulously; for example, Fiedler's review of the literature found a complete lack agreement of the components of a personal learning environment.Moreover, Moore saw these terminologies as emphasizing particular features such as digitization approaches, components or delivery methods rather than being fundamentally dissimilar in concept or principle.Although internet would not be created for another nine years, students were able to access class information with linked computer terminals.The first online course was offered in 1986 by the Electronic University Network for DOS and Commodore 64 computers.

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