educational technology

1. Audio Media
Prepared by:
Ms. Jechel Anggo

2. Audio
• It is a sound that lies within the range of
sensitivity of the human ear.
• It has a frequency of approximately 20- 20,000
hertz.

3. Physical properties of Audio
1. Loudness
Physiological sensation sensed in the brain
2. Pitch
Subjective impression about the frequency of
sound
3. Duration
Length of time

4. Hearing v.s Listening
• Hearing is a physiological process in which
sound waves entering the outer ear is
transmitted to the eardrum, converted to the
middle ear and changed in the inner ear into
electrical impulses to the brain.

5. Hearing v.s Listening
• Listening is a psychological process that begins
with receiving the sound, then, identification
and recognition of specific auditory signals
and ends in comprehension.

6. Kinds of Audio Media

7. A. Radio broadcast
• It is an inexpensive means of reaching a mass
audience or a great numbers of listeners.
• It is usually taped to eliminate scheduling,
timing and in the unfolding of the activities.
• The weakness of this is a one-way
communication device.

9. B. Recordings
• These may come in the form of ordinary
cartridge, open reel tapes, compact disc and
digital video disc.
Advantage: two-way communication device,
eliminates the scheduling.
Teachers can pre-hear the material so they can
evaluate its quality, content and expected
impact.

11. C. Audio Tapes
Advantages:
Economical
Easy to use
Requires little storage space
Disadvantage:
Tapes sometimes sticks or tangles
Poor frequency response

13. Uses of the Audio Media in instruction
• It is effective in story telling especially if
pictures accompany them.
• Good for listeners stimulating
imagination
• Can be used o improved listening skills
• It is ideal for teaching foreign language
• Useful for those who have reading
disabilities or non-readers.

14. The Chalkboard
and other
display
materials.

15. The Uses of Chalkboard
• To illustrate facts and processes, often
with a help of drawings and sketches,
maps and others.
• To provide a good medium for students
demonstration
• To enhance maximum pupil participation
• To provide for individual differences.

16. Advantages of the chalkboard
• Mistakes can be erased right away.
• It is always available
• Maximum student participation is insured as
pupils go to the board.
• Can be used for demonstrating purposes.

17. Bulletin Board Display
• It is a medium for displaying materials which
must be cooperatively planned and put up by
the teacher and her/ his students.
Purposes of Bulletin Board
a. To approach a unit.
b. To develop a unit.
c. To summarize a unit.

18. Quality of a good bulletin board
• It should be finished with edge.
• It must be fixed on the wall to prevent
accidents
• It must be colorful and attractive
• Have at least unified theme for clarity
• Avoid overcrowded display
• Be guided by the principles of balance,
harmony, unity, proportion and contrast.

19. Objects and Specimens
Objects – are concrete materials such as plants,
animals, tools, and artifacts.

20. Specimens
- A part or aspect of some item that is a typical
sample of the character of others in its same
class or group.