The key to individual success and progress at all levels of educational development is the act of teaching and learning. Hence, a well-planned and directed process is essential for an effective teaching and learning process. Teaching aids that are commonly denoted as audio–visual (AV) tools need to be adopted to enhance the process. Indeed, from an instructor’s and a student’s perspective, using Audio-Visual technologies for teaching and learning has positively affected teaching. More so, ‘attention, motivation, concentration, and retention of facts are enhanced through the use of audio-visual materials’. It is posited that technology plays a vital role in today’s pedagogy and it draws student’s attention. This can enhance effective means of learning when technology is used in classrooms.
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The use of instructional aides/technologies in the classroom has the potential to help the teacher explain new concepts clearly, resulting in better understanding of the concepts being taught. Teachers valued the use of technologies in class and that it had an impact on student’s content acquisition as the use of technology added to class performance.
Audio-visual materials encompass educational videos, documentaries and movies. These materials are mainly used to demonstrate events that are difficult, dangerous or even impossible to experience in real life. Educational videos facilitate students’ inference skills by exemplifying real-life events. While documentaries offer evidence by connecting events with historical documents, movies trigger emotional reactions in the audience in the face of real experiences and propose a fictional demonstration of the past. Field trips to educational environments offer essential opportunities for on-the-spot observations and experiences. These trips stimulate all sensory organs, the association of the subject matter with real-life and on-the-spot experiencing of the events.
Audio-Visual aids can be described as ‘any device which by sight and sound increase the individuals’ experience, beyond that acquired through reading’. The label ‘Audio-Visual’ consists of two words, that is ‘audio’, which refers to those materials that can be heard (e.g. radio, microphones, amplifiers and speakers), and ‘visual’, which refers to those materials that can be seen (e.g. chalkboard and whiteboard, overhead projector, LCD projectors, wall pictures and wall posters, picture flashcards, Word flashcards, Realia, videos or films and TV) . These Audio-Visual tools and their use at schools have become an important part of teaching and learning in educational institutions.
The Audio-Visual technologies come in various formats and can be categorized as both electronic and non-electronic. Examples of electronic Audio-Visual tools include personal computers, LCD projectors, amplifiers, speakers, DVDs, microphones, smart boards, slides, tape recordings, flashcards and discs, amongst others. The list for non-electronic Audio-Visual tools includes black- or whiteboards and chalks or markers, filmstrips, microforms, transparencies, arts and study prints, projected opaque materials, charts, maps, atlases, posters, photographs, billboards, textbooks, etc. The non-electronic Audio-Visual materials used in classrooms constitute what has been commonly referred to as the traditional approach to teaching and learning, which is still predominant in institutions in most developing economies because of its low affordability, inadequate electricity supply, and its ease of use and handling compared to the electronic ones, which require additional training and cost. Whilst the electronic Audio-Visual tools (especially computers, LCD projectors and public address systems) are now gaining ground and emerging in most developing economies institutions, the intent informing its use is not to eliminate the traditional approach but rather to supplement it.
TYPES OF AUDIO VISUAL MATERIALS
Audio Aids examples are Radio, Tape-recorder, Gramophone, Lingua-phone, Audio cassette player, Language laboratory
Visual Aids examples are Chart, Black and while board, Maps, Pictures, Models, Text-books, Slide projector, Transparency, Flash-cards, Print materials etc.
Audiovisual Aids examples are LCD project, Film projector, TV, Computer, VCD player, Virtual Classroom, Multimedia etc.
Academic achievement or academic performance is the extent to which a student, teacher or institution has attained their short or long-term educational goals. Completion of educational benchmarks such as secondary school diplomas and bachelor's degrees represent academic achievement. It is the measurement of student achievement across various academic subjects. Teachers and education officials typically measure achievement using classroom performance, graduation rates and results from standardized tests.
THE USE OF AUDIO VISUAL AMONG EDUCATION STUDENTS
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.
Teaching and learning are the important element in education. The teacher use different approaches and substantial to teach their students and their active learning. With the passage of time, altered methods and techniques are entered in the field of education and teacher use different kind of aids to make effective learning. Visual aids arouse the interest of learners and help the teachers to explain the concepts easily. Visual aids are those instructional aides which are used in the classroom to encourage students learning process. “Visual aids are those sensory objects or images which initiate or stimulate and support learning”. “Visual aids are any devices which can be used to make the learning experience more real, more accurate and more active”.
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.). There are many visual aids available these days. We may classify these aids as follows; visual aids are which use sense of vision is called Visual aids. For example :- models, actual objects, charts, pictures, maps, flannel board, flash cards, bulletin board, chalkboard, slides, overhead projector etc. Out of these black board and chalk are the commonest ones. The challenges of classroom instruction increases when prescribed a course to the class while course books (textbooks) are constituted with too many interactive expertise activities. Most significantly, it has converted a common phenomenon to integrate textbooks with audio visual aids as additional or supplementary resource for classroom course learning activities. 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.
In conclusion, Audio-visual aids are teaching tools that educators use to complement their academic lessons. Examples of audiovisual aids include videos, music clips, flip charts, slideshow presentations and overhead transparencies. Audio-visual aids should not be used as the only teaching method, but should be incorporated periodically throughout lessons to provide extra information for students. Audio-visual aids as those materials which do not depend solely upon reading to convey meaning. They may present information through the sense of hearing as in audio resources; sight as in visual resources or through a combination of senses. Indeed, the variety of such resources is a striking characteristic. Audio visual aids materials may be used to convey meaning without complete dependence upon verbal symbols or language.
Therefore, using visuals aids as a teaching method stimulates thinking and improves learning environment in a classroom. The effective use of visual aids substitute’s monotonous learning environments and helps Students develop and increase personal understanding of the areas of learning when they experience a successful and pleasant learning in the classroom. This is because Students find visual aids sessions useful and relevant when it has some direct relation to the course content or under discourse. However, it is also imperative to redirect teachers’ opinions, perceptions, experiences, failures and success while using visual aids resources. 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 and this has introduced important changes in the educational system and impact the way teachers communicate information to the learners.