This document discusses the concepts and nature of teaching. It defines teaching as a face-to-face process where a more experienced person influences a less experienced person. It notes that in India, policies from 1986 emphasized restructuring teaching education by setting up institutions like DIETs. Teaching is defined by various scholars as an interactive and disciplined social process aimed at changing another's behavior. The nature of teaching involves applying specialized knowledge and skills to meet students' educational needs, and transmitting knowledge despite challenges.