Education is very important and without education no one can lead a good life. Teaching and learning are the important elements in education. The teacher use different methods and materials to teach their students and helps in their effective learning. With the passage of time, different methods and techniques have entered in the field of education and teacher use different kinds of aids to make effective teaching. Teaching aids arouse the interest of learners and help the teachers to explain the concepts easily. Audio visual aids are important in education system. Audio visual aids are those devices which are used in classrooms to encourage teaching learning process and make it easier and interesting. Audio -visual aids are the best tool for making teaching effective and the best dissemination of knowledge. So, there is no doubt that technical devices have greater impact and dynamic informative system.
In practice, in the classrooms teachers concentrate on completing the syllabus within a stipulated time and force the learners to memorize the content without intellectual involvement and cognitive processing. This inculcation of Science instruction fails to inculcate scientific temper and skills in the learners and fails to develop academic excellence and competence and to fulfill the objectives of teaching science education. This shortcoming may be overcome by the greater application of Educational technology. Audio-visual aids are good means of communicating with students