In this way, we understood that audio-visual aid is the best tool for making teaching effective and the best dissemination of knowledge. Audio –visual material can be included tape recorder, radio, movie, projector method etc. Not to say that it has also some limitation that all schools cannot afford this modern technological devices because it is difficult to adopt this approach in government schools where still no adequate teachers, funding and proper infrastructure of classroom and water,toilet facilities. If this audio visual material is provided to govt. school, it will be a only show piece because teachers are also not very acquainted with it. Audio-visual material can be afforded by elite schools and also its use can be realized truly.