The ministry of higher and secondary special

CONCLUSION
Educational technology can be understood as the development of a set of systematic techniques and accompanying practical knowledge of designing, operating anf testing schools of educational system- Robert M. Gagne
Educational technology is the application of laws and recent discoveries of science and technology to the process of education- S.S. Kulkarni
Educational technology can be conceived as a science of techniques and methods by which educational goals could be realized- S.K. Mitra
Basically all the strategies and techniques used by the teacher in order to enhance the learning speed of students in the class is educational technology.
Educational technology is the mechanization of educational process which means to advance the knowledge of humans. This is applicable to all the three stages of human knowledge:
Preservation of knowledge: In recent time, knowledge given by the teacher was preserved orally or in the form of manuscripts. With the advancement of technology in modern time, it is preserved in the form of printed books, tape recorders, CDs, films and digitals.
Transmission of knowledge: With the help of machines, knowledge given by the teacher can be transmitted to a large number of students through radio, TV, loudspeakers, films, projectors, internet,etc. Through this technology, students can remove their doubts by listening or reading any programme according to their interest, ability an d convenience.
Advancement of knowledge: When knowledge is transmitted to a large number of learners through these devices, the learners apply this knowledge to their life situations and many new problems of life may arise. When any of the learners takes initiative to find out the solution of these problems, the knowledge advances automatically. People of new skills and intelligence are giving new dimentions of knowledge by using their creative potentials.
Evaluation of teaching: At the end of teaching, teacher evaluate whatever he taught in the class room. This process is helpful for the teacher to know at what extent the educational objectives have been achieved. The teacher uses measuring instruments or he constructs them and then matches the results with the objectives already formulated before teaching.
The technology, used for the purpose of accelerating and facilitating educational processes with certain objectives, is called as Educational Technology. In educational technology, humans and machines both have their respective roles and work as complements to each other in the process of education. Man uses his intellect and experiences along with the machines, and he organizes the teaching- learning process by using his arts. The educational technology is the science of strategies and techniques which leads to the educational goals. By using it, all inputs are organized in such a way that students learn themselves as per their need, ability and interest.