Media and Technologies Used in DE II

transcript

Distance Education and the Internet TECH4101

Dr. Alaa SadikInstructional & Learning Technologies Department

www.alaasadik.netalaasadik@squ.edu.om

Lecture FiveMedia and Technologies Used in Distance Education II: Advantages and limitations

Distance Education and the Internet TECH4101

Includes suggestions for class presentations

Video ConferencingA communication system among people, located at two or more different places, provides audio-visual live interaction between the learner and the teacher and among a group of learners.

Video Conferencing Systems

Types of Video Conferencing Systems

Audio-graphic teleconferencing Audio-low-scan TV teleconferencing CYCLOPS Telematics Full audio- video-conferencing Desktop video-conferencing

Audio-graphic teleconferencingCombines still-picture transmission with audio teleconferencing. Several different devices can be used to send pictures and graphics over the same telephone line.

Audio-low-scan TV teleconferencingA broadcasting system for displaying text and graphic on any TV set with special teletext decoder.

Audio-low-scan TV teleconferencingInteraction is added using response terminals to allow the learner to select specific pages, answer questions or determine the waiting time.

CYCLOPSDeveloped in the Open University in 1976, to help students and tutors write, draw and communicate with each other.

TelematicsA one-way television that transmits instruction from teacher to students. Interaction is established through a free call-back telephone enabling students to communicate directly with the teacher during broadcasting.

Full audio- video-conferencingA fully interactive television system that supports two-way communication using audio and video between or more two groups.

Full audio- video-conferencingSites are connected using telephone lines, local network or satellite.

Desktop/Web video-conferencingA two-way audio-video conferencing system supported by one or more computers connected via the Internet using desktop client or the Web.

Advantages of video-conferencing The ability to meet with the distance teacher without incurring travel expenses. Provide real-time and visual interaction simulates face-to-face interaction. Supports interaction between individuals or groups.

Limitations of video-conferencing Needs to be associated with other forms of materials. These materials need to be distributed to students to use during or after conferencing. Due to the high rate of visual signal, many technical problems still face full video-conferencing systems, such as bandwidth capacity and high cost. Restricts the type of content that can be delivered.

Video-conferencing ServicesVisit these site for more info about videoconference services

Polycom: fvc.com/fvc/fvcweb

IVCi: ivci.com

PresentPLUS: presentplus.com

Features of Computers & Networks Distribution of course-related information in new

and flexible ways. Interactive learning environment. Allow students to learn at their own pace, enables

personalised responses and reinforcement. Effective with special learners.

Computers and Networks

Features of Computers & Networks Communicate, support and control other devices. Can replace many traditional media of distance

education. High capacity, low-cost and innovative storage

devices.

Features of Computers & Networks Allow teachers and students to share resources

on their computers or to access information located in other computers or networks.

Allow distance learners to exchange messages with the tutor or other learners on the network.

Problems associated with the use of Computers & Networks

Transferability problemssuch as media and hardware incompatibility, the need for continuous updating and inadequate documentation and technical support.

Access problems. Poor courseware design and

self-management problems.

Discussions and Activities

- What is the Web?- What are the instructional capabilities of the Web?- What are the different levels/models/types of

using the Web in education?Answer: see next slide

W eb s upportedins truc tion

W ebpedagogic alres ourc es

S tand-alone ins truc tion

The End