2. WHAT IS AUDIOVISUAL TECHNOLOGY?
• AUDIOVISUAL (AV) TECHNOLOGY: IT IS AN ELECTRONIC MEDIA POSSESSING BOTH A SOUND AND A VISUAL
COMPONENT, SUCH AS SLIDE-TAPE PRESENTATIONS, FILMS, TELEVISION PROGRAMS, CORPORATE
CONFERENCING, CHURCH SERVICES, CCTV, PROJECTORS, TELECONFERENCE AND LIVE THEATER
PRODUCTIONS.
3. WHAT IS
CCTV MEAN?
• CCTV (CLOSED-CIRCUIT TELEVISION) IS A TV
SYSTEM IN WHICH SIGNALS ARE NOT PUBLICLY
DISTRIBUTED BUT ARE MONITORED, PRIMARILY
FOR SURVEILLANCE AND SECURITY PURPOSES.
4. APPLICATION OF CCTV IN TEACHING AT
SCHOOL.
CCTV SECURITY SYSTEMS HELP IN PREVENTING OR IDENTIFYING UNAUTHORIZED INTRUDERS WHO ENTER THE
PREMISES, THEREBY PROMOTING SCHOOL SECURITY. 2. KEEPING TRACK OF REMOTE ENTRANCES AND EXITS IS
EASIER THROUGH CCTV CAMERAS.
5. • CCTV IS DESIGNED TO HELP PREVENT AND DETECT CRIME. IT CAN REASSURE THE PUBLIC ABOUT
COMMUNITY SAFETY. IT IS LOCATED IN PUBLIC PLACES TO:
• PROVIDE EVIDENCE TO RELEVANT ENFORCEMENT AGENCIES
• MAINTAIN PUBLIC ORDER
• PREVENT ANTISOCIAL BEHAVIOUR AND NUISANCE
• PROVIDE REASSURANCE
• PROMOTE ECONOMIC WELL BEING
• CAMERAS RECORD IMAGES TWENTY FOUR HOURS EVERY DAY. CCTV OPERATORS WATCH LIVES IMAGES AT
STRATEGIC TIMES IN A LOCAL MONITORING SUITE. IF THEY NOTICE CRIMINAL ACTIVITY ON CAMERA, THEY CAN
DIRECT POLICE RESPONSE TO THE INCIDENT.
6. WHAT IS PROJECTOR?
A projector or image projector is an optical device that projects an image
(or moving images) onto a surface, commonly a projection screen. Most
projectors create an image by shining a light through a small transparent
lens, but some newer types of projectors can project the image directly, by
using lasers. A virtual retinal display, or retinal projector, is a projector that
projects an image directly on the retina instead of using an external
projection screen.
7. THE ADVANTAGES OF USING A PROJECTOR IN THE
CLASSROOM
• EASIER NOTE TAKING
• GREATER TEACHING VERSATILITY
• BETTER USE OF CLASS TIME
• BETTER STUDENT PRESENTATIONS
• KEEPING STUDENTS ENGAGED IN LEARNING
• ENCOURAGING VISUAL LEARNING
• ADDING INTERACTIVE LESSONS
• MODERNIZING SCHOOLS, EFFECTIVELY AND ECONOMICALLY .
9. Teleconferencing : Technology
for Education and Training
x By using animation, graphics and other techniques, teleconferencing is good
at showing processes for demonstrations and experiments, thereby
concretizing learning.
x By conveying sights, sounds, and the spirit of the subject, it provides a
more rounded view of an issue.
x It provides uniformity of training, which is interactive. On the basis of
feedback, instructors can make appropriate shifts in the teaching strategies
to meet learner needs.
x The element of interactivity in teleconferencing is encouraged through
dialogue and by stimulating responses to situations and visuals. The
opportunity of dialogue allows the learners to discuss, question, and
challenge issues.
