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People drew pictures inside their caves that includes basic animal illustrations, some shapes and so on.
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With the invention of paper in China, information became more accessible and easier to store.
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After the invention of the paper, people started to make copies of writings so that more people could reach them
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In 15th century, thanks to Gutenberg's printing press, accessing the information became even easier.
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We couldn't talk about public education until the 17th. However, after 17th public education became a thing but not of course everyone can still reach it. Only rich people had the access of it.
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In the first years of 20th century radios started to be used in classrooms for educational purposes. For example, BBC began broadcasting educational radio programs for schools in 1920s
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Projectors was used in classrooms for educational films, videos. Also teacher started making presentations with it.
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Overhead projectors began to be widely used in schools and businesses in the late 1950s and early 1960s.
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With the computer, a new age began. Teachers acquired many different ways to evaluate their students. Now, teachers were able to give immediate feedbacks to their teachers with the help of the computers' softwares.
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Everything became much easier after the internet was used for educational purposes. There are so many websites and tools for both teachers and students.
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--https://opentextbc.ca/teachinginadigitalage/chapter/section-8-1-a-short-history-of-educational-technology/
--Video that is on Edmodo about History of Edtech
--https://pixabay.com/photos/boston-public-library-boston-85885/ --and every other pictures
