This document discusses audio-visual aids and their use in education. It defines audio-visual aids as any equipment that engages both sight and sound, including tools like desktops, laptops, displays, projectors, cameras and sound systems. Research shows people retain 65% of information when they see and hear it simultaneously. The document provides guidance on selecting the right audio-visual aid based on teaching objectives, subject matter, audience and other factors. It emphasizes the importance of planning, preparation and evaluation when using audio-visual aids to make teaching more engaging and help students better understand and retain information.

1. Dr. L.Muralikrishnan,
Scientist, Division of Agricultural Extension,
ICAR-IARI, New Delhi -12

2. Introduction
 Visual aid
 Audio aid
 Audio visual aid

3. Classification…
AUDIO-VISUAL AIDS
DISPLAY PRESENTATION

4. Statistical data…
 Hear - 10%
 See - 35%
 See and Hear at the same time - 65%

5. AV Equipment
 broad range of tools used in media, science, education and
entertainment
 any equipment used to engage the senses of sight and
sound.
 used separately from visual equipment

6. Features…
 Uses
 Complexity
 Assistance
 Potential

7. List of AV Equipments
 Pentium Desktops
 Desktop Accessories
 Pentium Laptop/ Notebooks
 Monitors Receivers and LCD Displays
 LCD Projectors
 Video Monitors
 Sound System

8.  Cameras
 Staging/Lighting/Trussing
 Overhead Projectors
 Slide Projectors
 Projection Screens
 Computers
 PC Compatible Laser Printers/Fax Machines
 Meeting Aids
 Carts & Stands

9. Pentium desktops Desktop accessories laptops
LCD displays LCD projectors Video monitors

10. Selection of AV aids
 Teaching objective
 Subject matter
 Audience
 Size of the audience
 Cost of aids
 Teacher
 availability

11. Qns for evaluation..
 Do the materials give a true picture of the idea?
 Do they contribute meaningful content to the topic under
study?
 Is the material appropriate for age, intelligence and
experience of the learner?

12.  Is the physical condition of the materials satisfactory?
 Do they make learners better thinkers or critical minded?
 Do they tend to improve human relations?
 Is the material worth the time and effort involved?

13. Effective use of AV aids
 Planning
 Preparation
 Presentation
 Evaluation

14. Uses…
 Learner oriented
 Teacher organize material
 Clarify ideas
 Impress ideas
 Teaching more real
 Pictures
 Combat verbalism

15.  Overcome language barrier
 Attract attention
 Arouse interest
 Stimulate thinking
 Attitude change
 Save time

16. How to use AV aids in teaching???
 adding audio/visual aids to teaching techniques
 Implement "show and tell" sessions
 Provide audio/visual aides to demonstrate mathematical
concepts
 Use film clips

17. Essentials of AV aids
 Interest
 Memory
 Explanation
 Effects
 Emotions
 Structure

18. Principles of selection
 Select
 Use
 Make sure
 Practice

19. Types of AV lab models
 Video conferencing lab
 e – learning lab
 Community radio station
 Video production unit