When we use visual aids as teaching aid, it is one of the aspects which root participation of students in the lesson because when students look at visual model or aid, it is measured as a kind of contribution. The use of visual aids in teaching learning process has multifarious values. Visual aids give chance to speakers to make a more professional and consistent performance. The teaching career is full with limitless opportunities to enrich the academic survives of students, while some ideas and educational goals will be easy for students to hold, other will need you to think productively to ensure that important learning aims are met. By visual aids in teaching is one mode to enhance lesson plans and give students additional ways to process subject information.
The power of audio-visual lies in the fact that it is multisensory, stimulating the many senses of the audience. It is also interactive, enabling the end users of the application to control the content and flow of information. This has introduced important changes in the educational system and impact the way teachers communicate information to the learners.
Audiovisual (AV) is electronic media possessing both a sound and a visual component, such as slide-tape presentations, films, television programs, corporate conferencing, church services, and live theater productions.
Audio-visual is defined as the combination of various digital media types such as text, images, sound and video, into an integrated multi-sensory interactive application or presentation to convey a message or information to an audience. In other words, audio-visual means “an individual or a small group using a computer to interact with information that is represented in several media, by repeatedly selecting what to see and hear next”
Visual aids are tools that help to make an issue or lesson clearer or easier to understand and know (pictures, models, charts, maps, videos, slides, real objects etc.). Visual aids are important in education system. Visual aids are those devices which are used in classrooms to encourage students learning process and make it easier and interesting. Visual aids are the best tool for making teaching effective and the best dissemination of knowledge.
THE USE OF AUDIO-VISUAL IN TEACHING AND LEARNING
Audio-visual is now permeating the educational system as a tool for effective teaching and learning. With audio-visual, the communication of information can be done in a more effective manner and it can be an effective instructional medium for delivering information. Audio-visual access to knowledge is one of the possibilities of information and communication technology that has tremendous impact on learning. The instructional media have emerged in a variety of resources, and equipment, which can be used to supplement or complement the teachers’ efforts in ensuring effective learning by students. It is recognized that conventional media technologies can no longer meet the needs of our teaching and learning processes; as a result they are being replaced by audio-visual technology. This technology provides a learning environment that is self-paced, learner-controlled and individualized.
Audio visual technology adds new dimension to learning experiences because concepts were easier to present and comprehend when the words are complemented with images and animations. Stating further that it has been established that learners retain more when a variety of senses are engaged in impacting knowledge; and the intensity of the experience aids retention and recall by engaging social, emotional and intellectual senses. With audio-visual technologies, learners can create audio-visual applications as part of learning project requirements. This would make the learners active participant in the learning process, instead of just being passive learners of the educational content.
AUDIO-VISUAL AND STUDENTS PERFORMANCE
The impact of audio-visual resource can be so great in science teaching thus making learning permanent. Audiovisual methods seem to facilitate the acquisition, the retention and the recall of lessons learned, because, they seem to evoke the maximum response of the whole organism to the situations in which learning is done. And perceptual materials richly associate themselves with the unique experiential stressed that audio-visual materials are important in the teaching and learning processes because having seen something, most people remember, for whatever that thing was, it conjures up an image at a mere mention and can be talked freely.
audio-visual materials are very important and useful in education because the normal learner in so far as the function of his perception are concerned, gains understanding in terms of multiple impression records through the eye, ear, touch and senses which in turn improves their academic performance. Human beings learn more easily and faster by audio-visual processes than by verbal explanations alone. Audio- visual materials when effectively used will lessen major weakness of verbalism, humanize and vitalize subject matter, provide interesting materials needed, and also stimulate the initiative of the students. Another place where audio visual are useful is during seminar presentation or undergraduate projects defense and other departmental activities.
Audio-visual instructions do not only increase the motivation of the teachers and learners; they add clarity to the topic taught and make learning more interesting. Audio - visual materials make learning more permanent since they appeal to more than one sense. Learners retain most of what they hear, see and feel than what they merely hear. Audio-visual instructions encourage the use of audio-visual resources to make abstract ideas more concrete to the learners. Therefore, the teacher’s duty is to make learning live not just something to remember but part of living experience. This can be done effectively by employing the use of audio-visual resources in teaching and learning as a means of impacting knowledge to learners and improve on their academic performance. Educators have come to realize that the most effective teaching and learning take place when an individual is made to have direct experience with the subject under study, in other word, learners can learn best by doing. It is only by the use of audio-visual resource that the learners can be offered the opportunity to learn by doing. This is because attention, motivation, concentration and retention of facts are enhanced through the use of audio-visual materials.
Conclusively, Audio-visual in Education has been extremely effective in teaching individuals a wide range of subjects. Audio-visual is changing the way we communicate with each other. The way people send and receive messages is more effectively done and better comprehended. While a lecture can be extremely informative, a lecture that integrates pictures or video images can help an individual learn and retain information much more effectively.