It is not possible to determine who coined the term educational technology. Different educators, scientists, and philosophers have formulated different definitions for Educational Technology. Educational technology can be described as a complex and integrated process that involves people, procedures, ideas, and organizations. Technology from various fields of science can be borrowed to meet the educational needs of educators.
The five stages of educational technology have been broadly defined.
The use of aids such as charts, diagrams, symbols, models and specimens is the first stage in educational technology. Educational technology is a synonym for audio-visual aids.
The second stage in educational technology is the “electronic revolution”, which saw the creation and establishment of advanced hardware and software. The educational scene has been transformed by the introduction of audio-visual aids such as tape-recorder and radio, tape-recorder, tape-recorder, projector, magic lanterns, television, radio, and television. These sophisticated tools and equipments were used to effectively present instructional materials. This is the educational technology concept.
The development of mass media, which led to the ‘communication revolution’ in educational technology, is the third stage of education technology. Computer-assisted instruction (CAI), which has been used in education since the 1950s, also gained popularity during this time.
The fourth stage in educational technology can be identified by the individualized process of instruction. Programmable learning and programed instruction gave rise to a new dimension in educational technology. The self-instructional materials, teaching machines and self-learning system emerged.
The concept of system engineering, or system approach, is the latest in educational technology. It focuses on language labs, teaching machines, program instruction, multimedia technologies, and the use of computers in instruction. Educational technology, according to this definition, is a method of planning, carrying out, and evaluating the entire process of teaching and learning based on specific objectives.
Education technology in the Stone Age, Bronze Age, and Iron Age
Despite the uncertainty surrounding the origin of the term educational technology can be traced back at the time of the three age system periodization human prehistory, which consists of the Stone Age and the Bronze Ages, as well as the Iron Age.
The Stone Age was a time when simple technological innovations were of paramount importance. These included the ability to light fire with rubbing stones, making various utensils and weapons from stones, and clothing practice. A small number of Stone Age people were able to build ocean-worthy outrigger boats to move across the Ocean. This was how they began to learn about the ocean currents, weather conditions and sailing practices, as well as star maps. Polished stone tools were used for agricultural purposes during the Neolithic period. They were made largely from hard rocks by digging underground tunnels. This can be considered the beginning of mining technology. Even after the appearance of iron and bronze, polished axes proved so useful that people still used them for clearing forests and setting up crop farms.