This is the transition phase for learner and teacher fraternity. Every day we are struggling hard with the technology which has encrypted in the learning and teaching field. While talking about technology, it is pertinent question whether technology can replace teacher? Whether we should forget the teacher and teaching strategies? Whether we should forget about the classroom and classroom communication process? The current book tries to deal with such several questions and takes a stand that teacher is a vital component for learning and teaching, but no doubt the role of the teacher has been transformed and become a much more demanding than the earlier. The current book has a presumption that educational technology is nothing but pursuing each and every task in the field of education in a technological way which means with minimum possible resources, minimum possible energy and efforts and with optimum utilisation of available resources. The book begins with conceptualizing educational technology. What does educational technology mean, what are its types, what are its ways, how did it evolved and developed. Then it talks about psychological bases of educational technology. Focus of it lies on the bases shared by Ausubel, Bruner, Vygotsky and Skinner. These have conceptualized learning in their way. The book briefly discusses about their views and theory. Communication in education focusses upon the classroom communication and communication in general. Various models, components and factors related to communication are dealt with in this section. Now it comes about learning aids and media in educational technology. What are various types of learning aids and how these can be understood in various ways, which learning aids are suitable for various learners, keeping in mind their various characteristics? There are various ways of classification of learning aids. The book endeavours to have a close look over various media and learning aids.