Audio-Visual aids
learning is modification of behavior through experience. The basic learning experiences have to be received by the pupil through his senses; as the gateways of knowledge. Most of such experiences enter through one’s eyes and ears. Materials that help to make learning experience clear and vivid by appealing to the senses are called audio-visual aids.
FUNCTIONS OF AUDIO – VISUAL AIDS
It help learning at the scenery level
They develops deeper understanding
It arouses curiosity and stimulates self activity.
It motivates pupils
It provides direct and representative experience
It make children feel freedom
It provides clarity to learning.
Provide variety in methods of teaching and learning.
They offer reality of learning experience.
CLASIFICATION OF AUDIO VISUAL AIDS
Audio Visual Aids can be classified into three categories. They are projected aids, Nonprojected aids, Activity aids.
Project aids Non Projected Aids Activity Aids
Slides Graphic aid Field trips
Slide projector Audio aids Museum
Film projector 3-D aids Exhibition
LCD Display board Demonstration
PROJECTED AIDS
A projected aid is one in which items to be observed are projected on a screen using mechanical devices. The various aids under this category have been listed in the above table.
Films and film projectorA single picture itself is an effective aid, but a sequence of pictures presented continuously have a cumulative effect. That is why films in the form of motion picture is considered to be a valuable aid. Film projector is a device used to project the film on a screen at a convenient place so that every student can clearly observe the presentation and at the same time attend to the related sounds.
SLIDES AND SLIDE PROJECTOR
Any picture or diagram which will take a long time to be drawn on black board in the course of a class period can be developed as a slides. A slide projector is an instrument equipped with a powerful light source and a carrier for holding slides of suitable sizes.
LCD
An LCD project is device for giving presentation generated on computer and it is a type of video projector for displaying video images or computer date on a screen or other flat surface.
Advantages It can be used in dark room as well as in light room It makes teaching- learning process more interesting, easy, impressive. Reaches a mass audience. Multimedia presentation No need of special screen for the projection . any white projection surface can be used.
NON PROJETED AIDS
Non projected aids can classified in to :-
1. Graphic aids
2. Display boards
3. 3-D aids
4. Audio aids
Graphic aids
Graphic aids are visual aids such as graphs, diagrams, chart, posters, maps, cartoons, etc…
Display Board
Black board, peg board, flannel board, magnetic board, bulletin board, marker board, hook and
loop board, plastigraph board are goes under this category.
Uses of the black board
The teacher can illustrate the lesson on the black board and draw the attention of the
class to the salient features in the lesson.
The lesson can be phased and summarized in the right manner
The teacher can erase writing and drawing and a start afresh
It provides a lot of space for decorative and creative work
Pupil’s interest in class work can be stimulated by black board writings and drawing.
Abstract ideas can be clarified in the exposition stage and summery containing important
points can be given in the recapitulatory stage.
3-D aids
Models, objects, specimen, Moke-ups ,puppets, diorama are examples of three dimensional aids.
Models are concrete representation of object. They may be static or working models. Specimen may be representative of class or group of similar object. When we talk about flowers in general and represent all flowers by a typical flower is a specimen . A moke up is an operative model usually of a process designed to be worked with directly by the Lerner for specific analysis.Puppet is used to stimulate reality, to entertains, and to pass knowledge .
Audio Aids
Radio, recordings, tape recorder public address system are belonged this category. Radio is a powerful medium for mass communication. Programmers mean for teachers as well as student are available . tape recorders is used to record sound which can be reproduced at will as many times as required it is vary effective aid for class room instruction. the recorded tapes consisting of lessons and handled by eminent teachers on any subject can be played in the class. It is impressive because by novelty and expertise used in its preparation and the possibility for repeated presentation.
ACTIVITY AIDS
Field trips and Excursion , Exhibition , Demonstration, Museum, Dramatization, Vivarium planetarium are examples of activity aids. Excursion usually involve a tour by a person or a group of persons to some selected pales. Exhibition are effective models of mass communication if it is ordained by the pupils them selves, they get opportunity for self activity. Demonstration is a technique which is often used by all teachers. Ideas, skills, attitude, and process can be demonstrated. Museums are wonderful media for public education they are institutions that collect and preserve original objects and specimen and use them for research and educational displays. Museums are depositories with an array of educative materials including rare specimenon verity of subjects arranged in a logical order. Dramatization is reality and concentrate tolearning situation it also gives opportunities for self expression. It can be successfully utilized forthe learning of various subjects. It gives new life to the dead facts deposited in the text books.Vivarium is a live corner arranged in school or at home where creatures living in the air aregrown. A planetarium consists essentially of a dome usually mounted on the ceiling of a hall torepresents sky. A special projected is used to display images of the celestial beady on the dome.The viewers who are seated below can see the projected image that will appear to be very realistic. Taped narration and sound effects as adds to the effectiveness of the presentation
