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In the United States, the use of media for instructional purposes has been traced back tp at least as early as the first decade of the 20th century.
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In the United States, the first catalog of instructional films was published in 1910
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The public school system of Rochester, NY become the first to adopt films for regular instructional use.
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During early 1920's through 1030's, technologicla advances in such areas as radio broadcasting, sound recordings, and sound motion pictures led to increased interest in instructional media
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Many aduiovisual devices were ised extensively in the military services and in industry.
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Increase interest in television as a medium for delivering instruction
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The Federal Communications Commission set aside 242 television channels for educational purposes.
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By the early 1070's, the term educational technology and instructional technology began to replace audiovisual instruction to describe the application of media for instructional purposes.
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By 1960, there were 50 educational channels
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Computers were first used in education and training at a much earlier date. Over the course of the period, the computer has evolved to what we have today in the classroom.
