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Blackboards/chalkboards were used in schools around 18th century. -
In 1900s, educational films and Sidney Pressey’s mechanical teaching machines (1920) emerged, and these might be accepted as the beginning of the history of educational technology. -
The British Broadcasting Corporation (BBC) started broadcasting educational radio programs in 1920s. -
From the early twentieth century, duplicating machines were started to develop. -
Slide projectors were extensively used in 1950s. -
In 1960, online education started from the University of Illinois. -
In 1960s, television was used for educational purposes for the first time. -
From 1970s, new learning models such as “computer-based training" (CBT) and “computer assisted instruction" (CAI) were developed through the 1990s.
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In the 1980s and 1990s, diverse schools that can be put under the umbrella label “Computer-based learning" (CBL) appeared.
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In the mid-1980s networking in education and digitized communication started, and they became popular in the mid-1990s, especially through the “World Wide Web (WWW), Email and Forums”.
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In the 2000s, the developments of technology have led to new learning theories favoring “learning-in-context” scenarios. Some prefers the term “integrated learning” instead. -
More than 6 million students were enrolled at least one online class in 2015. -
http://edutechwiki.unige.ch/en/Educational_technology#A_short_history
https://en.wikipedia.org/wiki/Educational_technology#History
https://opentextbc.ca/teachinginadigitalage/chapter/section-8-1-a-short-history-of-educational-technology/
https://en.wikipedia.org/wiki/History_of_virtual_learning_environments
https://pixabay.com/images/id-4728618/
https://pixabay.com/images/id-3362273/
https://pixabay.com/images/id-3195427/
https://pixabay.com/images/id-1547018/ -