Man is a unique product of its evolution, who accumulates his experiences and handover it to the next generation. The books, machines and tools are used to preserve, transmit and enhance the knowledge and experiences. The process of transmission of theory, knowledge and experiences to next generation is generally recognized as Education, which socializes a child through inculcating values and dispositions in his behaviour. An out dated Educational system could not achieve its aim of socialization of child until the Educational process is not updated vary according to time, place and circumstances.

Over the centuries, scientific innovations were applied to education for better out comes. It was supposed how to make educational process efficient and effective? So, that it could bring the all round development in Behavioural potential of the learner. It gave the emergence to a new field of study and research, which is known as educational technology. Educational technology emerged as an applied science with the scientific discoveries and developments in technology in different fields after world war-II. Educational technology is an emerging discipline. In one sense education technology is referred technology applied to education. Educational technology is which optimize the human learning. Educational technology applies the products of science, scientific theory and principles and discoveries to strengthen the process and organization of education.

This edition covers some of the emerging aspects of the Educational Technology i.e. Emergence of Educational Technology as discipline, Nature of Educational Technology, Educational Media, Instructional Technology, Instructional Designs, ICT in Education and Multimedia. Authors have tried their best to include most of the significant aspects of Educational Technology in the book. Honest attempts were made to make the book comprehensive in coverage of the prescribed content area of B.Ed. and M.Ed. courses offered by various universities.

About the Author
Dr. Suresh Chandra Pachauri was born in 1974. He did his masters degree in Economics, Sociology and Hindi from Agra University and that in Education from RIE Ajmer (Rajasthan). He was awarded Ph.D. degree in Education from Dr. B.R. Ambedkar University, Agra. He is working as Teacher Educator for the last 10 years, presently he is serving as Senior Lecturer in SGRR (PG) College, Dehradun. He is the chief editor of International Journal of Education and Allied Sciences, ISSN 0975-8380 and Education-Today; an international journal of education. He has credit of his five books, 10 research papers and articles published in Journals of national fame. He has presented more than two dozen papers in various national and international seminars, workshops and conferences in India. He is life member of different associations related to Teacher Education & is presently secretary of Council of Teacher Educators for the state of Uttrakhand. He is Program Incharge of B.Ed. IGNOU, at Study Center ??? 3732 (P), Dehradun. He is also associate with 'Help Age Home India', 'Sharansh' and 'Chitransh, social organizations.

Mr. Pradeep Kumar was born in 1978. He completed his graduation from University of Delhi, M.A. in English literature, M.Ed., M.Phil. (Education) from C.C.S. University, Meerut. He qualified UGC-NET (Education) in 2003. He received gold medal and honour of ???Vishishtha Yogyata??? for M.Phil. 2004. He has seven year experience of teaching for B.Ed. and M.Ed. Classes. He also has three year experience of supervising M.Ed. Dissertation and Projects. At present he is working as Assistant Professor (M.Ed), Dept. of Education, Modern Institute of Technology, Dhalwala Rishikesh. He is also working as a Counselor & faculty of IGNOU B.Ed., at Study Center 3711P. He have credit of his two books 'Environmental Education' ISBN 978-81-313-08912, 'Educational Technology' and various articles and chapters published in national and international Journals, magazines and books. He also attended various seminars, workshops and conferences at national level.