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Educational technology is the use of both physical hardware and educational theoretics.
It encompasses several domains, including learning theory, computer-based training, online learning, and, where mobile technologies are used, m-learning.
In 1971, Ivan Illich published a hugely influential book called, Deschooling Society, in which he envisioned "learning webs" as a model for people to network the learning they needed.
The 1970s and 1980s saw notable contributions in computer-based learning by Murray Turoff and Starr Roxanne Hiltz at the New Jersey Institute of Technology (1973–77) and the Microelectronics Education Programme (1980–86).
Accordingly, there are several discrete aspects to describing the intellectual and technical development of educational technology: An educational technologist is someone who is trained in the field of educational technology.
Educational technology encompasses e-learning, instructional technology, information and communication technology (ICT) in education, Ed Tech, learning technology, multimedia learning, technology-enhanced learning (TEL), computer-based instruction (CBI), computer managed instruction, computer-based training (CBT), computer-assisted instruction or computer-aided instruction (CAI), internet-based training (IBT), flexible learning, web-based training (WBT), online education, digital educational collaboration, distributed learning, computer-mediated communication, cyber-learning, and multi-modal instruction, virtual education, personal learning environments, networked learning, virtual learning environments (VLE) (which are also called learning platforms), m-learning, ubiquitous learning and digital education.
From their introduction, books and pamphlets have held a prominent role in education.
From the early twentieth century, duplicating machines such as the mimeograph and Gestetner stencil devices were used to produce short copy runs (typically 10–50 copies) for classroom or home use.
This work was especially popular with museum education.
Even in recent years, videoconferencing has risen in popularity to reach over 20,000 students across the United States and Canada in 2008–2009.By the mid-1980s, accessing course content became possible at many college libraries.