Media education stage
From 1950s to 1970s, educational technology mainly studied how to better design, make and use media tools, such as projectors, slides and tapes, to illuminate the classroom and make teaching activities more attractive.
Application stage of computer and network education
From 1980s to 1990s, with the popularization of computers and networks, educational technology ushered in revolutionary changes. The emergence of new technologies, such as computer-aided instruction (CAI) and network teaching, makes learning more convenient and efficient.
Information education stage
Since the 20th century, we have entered a new era of information education. The endless stream of educational software and applications makes it possible to share and optimize teaching resources. At the same time, social media and mobile technology have also brought infinite possibilities for teaching.