PPT On RADIO

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RADIO Presentation Transcript:
1.PRESENTATION ON RADIO

2.RADIO
Radio is the transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Information is carried by systematically changing (modulating) some property of the radiated waves, such as amplitude, frequency, phase, or pulse width. When radio waves pass an electrical conductor, the oscillating fields induce an alternating current in the conductor. This can be detected and transformed into sound or other signals that carry information.

3.» A type of Auditory Aids.
» One of the most common form of public education and entertainment.
» If used effectively, serves as a vital agency of mass communication.

4.CHARACTERISTICS OF AUDIO EXPERIENCES THROUGH RADIO
Immediacy : Radio can describe events as they happen.
Emotional impact : Through the combined effect of voice, environmental sound and music.

5.Authenticity
Conquest of time and space
One way communication
Audition

6.PROCEDURE FOR EFFECTIVE UTILIZATION OF RADIO
Procure and study in advance the nature and content of the radio lesson.
Prepare students for the radio lesson by informing them about the background of the lesson.

7.Allow students to listen to the radio lesson  and note down important  points.
Make use of noted points to discuss with students.
Clarify the main points of radio lesson using other visual aids.

8.USES
To develop increased skills in listening participation and evaluating what is heard.
To acquire information about the cultural background of various groups.

9.To learn about the teaching of major faiths, as well as personally receive inspirational values from religious programmes.
To call attention to social problems which frequently involve health.
To keep well informed in literature, history and current events.

10.Its one of the mass media that can be used to inform the public objectives and needs of nursing and nsg education.
Broadcasts are effective means of presenting music, drama and discussions for study and appreciation.

11.KINDS OF RADIO LESSONS
Talk
Discussion
Dramatization

12.ADVANTAGES
Radio programmes are good for mass education.
Effective for distance education.
Can arouse positive emotions and reinforce positive attitudes.
Effective and expert teacher can be made to reach out to a large majority of students.

13.LIMITATIONS
No concentrated attention
One way communication
No reusability
Administrative problems

14.Audiovisual Instruction Movement
1920 - 1930
* Technological advances in areas like radio broadcasting, sound recordings, and sound motion pictures led to an increased interest in instructional media. * The Great Depression occurred in 1929. During the Depression, radio broadcasting brought entertainment of comedy, drama, and music. It also brought news and information. It also let people hear the inspiring words from the President about how life was going to get better * The field continued to grow but the educational community at large was not greatly affected by the growth.