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1963 Definition
"Audiovisual communications is that branch of educational theory and practice primarily concerned with the design and use of messages which control the learning process. It undertakes: (a) the study of the unique and relative strengths and weaknesses of both pictorial and nonrepresentational messages which may be employed in the learning process for any purpose; and (b) the structuring and systematizing of messages by men and instruments in an educational environment" (Ely, 1963, pp. 18-19). -
1972 Definition
"Educational technology is a field involved in the facilitation of human learning through the systematic identification, development, organization and utilization of a full range of learning resources and through the management of these processes" (Ely, 1972, p. 36). -
1977 Definition
"Educational technology is a complex, integrated process, involving people, procedures, ideas, devices and organization, for analyzing problems and devising, implementing, evaluating and managing solutions to those problems, involved in all aspects of human learning" (AECT, 1977, pp.1). -
1994 Definition
“Instructional technology is the theory and practice of design, development, utilization, management, and evaluation of processes and resources for learning” (Seels & Richey, 1994, p. 1). -
2019 Definition
Educational technology is the physical hardware, technical software, and educational methods that combine to foster learning in a variety of settings. Educational technology is responsible for assessing existing limitations in learning and creating productive solutions that contribute to the educational experiences of learners. Additionally, its flexible and evolving core is susceptible to newness with any variation in learning styles or leadership.