<Li> To develop lesson plans that are simple and easy to follow </Li> <Li> To make class more interactive and interesting </Li> <Li> To focus on student - centered approach </Li> <P> In this modern world we use digital tools to improve the teaching - learning process . The most common tool we use in classroom these days is PowerPoint slides, which makes the class more interesting, dynamic and effective . Moreover it also helps to introduce new topics in easy way . The use of audiovisual aids makes the students to remember the concept for longer period of time . They convey the same meaning as words but it gives clear concepts thus help to bring effectiveness in learning . </P>

What are the audio visual aids in teaching