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Computer and Communication Networks in ODL


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This presentation is part of teleconference for PGDDE students in the Course Communication Technology for DIstance Education delivered on Sptember 8, 2008.

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Computer and Communication Networks in ODL

  1. 1. Computer and Communication Networks Sanjaya Mishra, PhD
  2. 2. The Context <ul><li>Computers and their use in education and distance education </li></ul><ul><li>Communication and use of satellite </li></ul><ul><li>Computer networks and Internet </li></ul>
  3. 3. How computers are being used? <ul><li>For teaching </li></ul><ul><li>For learning </li></ul><ul><li>For office use and administration </li></ul><ul><li>Computer assisted learning and computer managed learning </li></ul><ul><li>Multimedia and CBT </li></ul><ul><li>Computer media in education </li></ul>
  4. 4. Computer media in distance education <ul><li>Information processing ( I learn by using computer ) </li></ul><ul><li>Interaction ( I learn by interacting with the computer ) </li></ul><ul><li>Communication ( I learn from others ) </li></ul>
  5. 5. Satellite communication <ul><li>Different from terrestrial communication </li></ul><ul><li>Geosyncrhonous (orbital period around the earth is 24 hours) </li></ul><ul><li>Teleconference is possible today </li></ul>
  6. 6. Advantages of teleconference <ul><li>Reaching remote places </li></ul><ul><li>Quality of instruction </li></ul><ul><li>Immediacy of feedback </li></ul><ul><li>Cost-effective </li></ul><ul><li>Familiar instruction mode </li></ul>
  7. 7. Types of teleconference <ul><li>Audio-teleconference </li></ul><ul><li>Video-teleconference (one-way and two-way) </li></ul><ul><li>Computer conferencing (VSAT based) </li></ul>
  8. 8. Problems of teleconferencing <ul><li>Poor integration of teleconference to teaching and learning </li></ul><ul><li>Poor interaction and student attendance </li></ul><ul><li>Lack of information about teleconference </li></ul><ul><li>Poor quality of presentations (talking head type) </li></ul><ul><li>Poor instructional design and technical support </li></ul><ul><li>Poor organization and reception end </li></ul><ul><li>More is not good ; more interaction kills </li></ul>
  9. 9. Computer networks <ul><li>Resource sharing </li></ul><ul><li>Promotes communication </li></ul><ul><li>Information management </li></ul><ul><li>Types of networks: LAN, WAN and MAN </li></ul><ul><li>Network of networks or Internet </li></ul>
  10. 10. Internet services <ul><li>Telnet </li></ul><ul><li>FTP </li></ul><ul><li>Email </li></ul><ul><li>Internet Chat </li></ul><ul><li>Mailing lists </li></ul><ul><li>Video conferencing </li></ul><ul><li>World Wide Web </li></ul>
  11. 11. World Wide Web <ul><li>Information delivery </li></ul><ul><li>Collaboration </li></ul><ul><li>Teaching and learning </li></ul><ul><li>Huge information resource </li></ul><ul><li>Search engines used to find information </li></ul>
  12. 12. Educational implications of WWW <ul><li>E-Learning or online learning </li></ul><ul><li>Interactive distance learning </li></ul><ul><li>Increasing access </li></ul><ul><li>Multimedia delivery (rich learning environment) </li></ul><ul><li>Automated system catering to the needs of large numbers </li></ul>
  13. 13. How online learning? <ul><li>Self-Designed systems </li></ul><ul><li>Off-the-shelf systems </li></ul><ul><li>LMS: Blackboard, Moodle, Atutor </li></ul>
  14. 14. LMS facilities <ul><li>Content delivery in structured manner </li></ul><ul><li>Discussion forum </li></ul><ul><li>Mailing lists </li></ul><ul><li>Blogs </li></ul><ul><li>Wikis </li></ul><ul><li>Assessment of different types </li></ul><ul><li>Whiteboards/ and video conference </li></ul><ul><li>Student tracking of their progress </li></ul><ul><li>Low dependence on programmers </li></ul><ul><li>Provision for multiple media formats, pdf, video and audio </li></ul>
  15. 15. Summary <ul><li>Today education is delivered in a networked world; </li></ul><ul><li>Even in the F2F situation computer and communication networks plays a vital role; </li></ul><ul><li>In distance education, the use of teleconference and the WWW is increasing; </li></ul><ul><li>Online learning will revolutionize the L3 scenario; </li></ul><ul><li>Effective use of ICT will improve the quality of traditional distance education. </li></ul>