The document discusses audio visual aids and bulletin boards. It defines audio visual aids as instructional materials that provide knowledge through the senses of hearing and seeing. Bulletin boards are described as a medium for teachers and students to cooperatively display materials in the classroom. They are intended to motivate learners, provide information, and supplement instruction while capturing attention. The document outlines the purposes, characteristics, advantages, and disadvantages of using bulletin boards in the classroom.

1. BULLETIN BOARD
Submitted By,
Haritha P Mohan
Reg; 160011003213
Physical Science

2. AUDIO VISUAL AIDS
 Audio visual aids are also called instructional materials. Audio
literally means “hearing” and “visual” means that which is
found by seeing. So all such aid, which endeavor to make the
knowledge clear to us through our senses are called “Audio
Visual Aids” or instructional Material. All these learning
material make the learning situations as real as possible and
give us firsthand knowledge through the organs of hearing and
seeing. Therefore, any device which can be used to make the
learning experience more concrete and effective, more realistic
and dynamic can be considered audio visual material.
 According to Burton “Audio visual aids are sensory
objectives and images which stimulate and emphasis on
learning process”

3. COMMON CLASSIFICATION
 Auditory aids:
Any instructional device that can be heard but not seen.
Eg : Microphones, Amplifier, Tape records etc…
 Visual aids:
Any instructional device that can be seen, but not heard.
Eg : Chalk Board, Bulletin Board, OHP, Slides etc….

4. BULLETIN BOARD
Bulletin board is a medium for displaying materials
which must be cooperatively planned and put up by the
teacher and its student. It is one of the permanent
fixtures found in the classroom.

5. PURPOSES
 To motivate the learner
 To give the correct initial impression
 To broader the sensory experience of the
learner
 To intensify impression and vitalize
instructions
 To provide information
 To supplement and correlate instructions
 To save time.

6. CHARACTERISTICS
 It should be with finished edge
 It must be fixed on the wall to prevent accidents
 It must be colorful and attractive. Border designs
and mounted pictures can promote this
 Have a least a unified theme for clarity
 Avoid over crowded display
 In putting it up be guided by the principles of
balance, unity, harmony and contrast.

7. ADVANTAGES
 It is convenient for group teaching
 It is economical and it can be used over again
and again
 It captures attention
 It can be used for drill and revision
 It can be used for drawings and illustrations
from the textbooks
 It provides students a realistic approach and
experience
 It is even better for over burden classrooms.

8. DISADVANTAGES
 It is time consuming
 It is very expensive
 It distracting students
 A cluttered bulletin board that is full of
information can become confusing students
 It cause injuries
 The concept of printing paper and posting it
on bulleting boards is not very green.
 It cause student fairness.