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Slide projectors were widely used during the 1950s in educational institutional settings.Cuisenaire rods were devised in the 1920s and saw widespread use from the late 1950s.As such, educational technology refers to all valid and reliable applied education sciences, such as equipment, as well as processes and procedures that are derived from scientific research, and in a given context may refer to theoretical, algorithmic or heuristic processes: it does not necessarily imply physical technology.Educational technology is the process of integrating technology into education in a positive manner that promotes a more diverse learning environment and a way for students to learn how to use technology as well as their common assignments Given this definition, educational technology is an inclusive term for both the material tools and the theoretical foundations for supporting learning and teaching.Richey defined educational technology as "the study and ethical practice of facilitating learning and improving performance by creating, using and managing appropriate technological processes and resources".The Association for Educational Communications and Technology (AECT) denoted instructional technology as "the theory and practice of design, development, utilization, management, and evaluation of processes and resources for learning".By the mid-1980s, accessing course content became possible at many college libraries.In computer-based training (CBT) or computer-based learning (CBL), the learning interaction was between the student and computer drills or micro-world simulations.

In practice, a "virtual education course" refers to any instructional course in which all, or at least a significant portion, is delivered by the Internet.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.In the mid 1960s Stanford University psychology professors Patrick Suppes and Richard C.Atkinson experimented with using computers to teach arithmetic and spelling via Teletypes to elementary school students in the Palo Alto Unified School District in California.

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