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BLACKBOARD (CHALKBOARD)
It was not until 1841 that the classroom chalkboard was first introduced. Shortly thereafter, Horace Mann began encouraging communities to buy chalkboards for their classrooms. By the late 1800s, the chalkboard had become a permanent fixture in most classrooms.
http://institute-of-progressive-education-and-learning.org/a-history-of-education-technology/
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RADIO
Radio entered the educational system in the 1920s.Radio was heralded as a tool that would revolutionize classroom teaching.William Levenson, the author of Teaching through Radio,predicted, “The time may come when a portable radio receiver will be as common in the classroom as is the blackboard. Radio instruction will be integrated into school life as an accepted educational medium." (Cuban,1986,p.24)
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OVERHEAD PROJECTOR
In the 1930’s the overhead projector was widely used by the U. S. Military to train forces during World War II and eventually the device spread to schools.
http://institute-of-progressive-education-and-learning.org/a-history-of-education-technology/
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TELEVISION
It wasn’t until the 1950s and 1960s that instructional television reached its peak, the first documented use of closed circuit television was in Los Angeles public schools and at the State University of Iowa in 1939. While the popularity of instructional television was rising between 1939 and the 1950s, the overall United States educational system was facing harsh criticism.
institute-of-progressive-education-and-learning.org
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COMPUTER
Computers were first used in education in the 1950s in a way that was intended to individualize instruction. This method became known as computer assisted instruction (CAI).
http://institute-of-progressive-education-and-learning.org/a-history-of-education-technology/
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HAND-HELD CALCULATOR
The predecessor of the much-loved and much-used TI-83, this calculator paved the way for the calculators used today. There were initial concerns however as teachers were slow to adopt them for fear they would undermine the learning of basic skills.
https://www.sutori.com/story/educational-technology-timeline--mNL3LPQAPeDbEQ7DNkpjdNGV
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CD-ROM Drive
Video in the classroom has become an essential teaching resource. Beginning with the VCR over two decades ago(1985) to current technologies providing teachers with a variety of video sources, the incorporation of video presentations as part of course content permeates the modern classroom.
https://www.socialstudies.com/c/whydvd.html
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INTERACTIVE WHITEBOARD(CHALKBOARD)
The chalkboard got a facelift with the whiteboard. That got turned into a more interactive system that uses a touch-sensitive white screen, a projector, and a computer. Still getting slowly rolled out to classrooms right now.
https://www.sutori.com/story/educational-technology-timeline--mNL3LPQAPeDbEQ7DNkpjdNGV
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TABLETS AND MOBILE PHONES
Technology today has been improving exponentially and continues to improve rapidly. iPads and iPhones have created great opportunities for children to expand their education.
https://www.sutori.com/story/history-of-educational-technology--PAnjTWFBNnfgsNNgAQ2gAJT4
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EDMODO
As social networking sites such as MySpace and Facebook infiltrate society's daily life,Nic Borg and Jeff OHara develop a safe,secure social networking platform for schools.Edmodo is an example of how teachers in traditional classrooms can integrate anytime, anywhere learning to promote collaboration in a secure environment that mimics Facebook.
https://www.tiki-toki.com/timeline/entry/64373/History-of-Educational-Technology
http://www.hamstreet.org.uk/wpcontent/uploads/2016/04/logo_edmodo1.jpg
