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Asymmetric Asynchronous Distributed Education (2)

Asymmetric Asynchronous Distributed Education (2). A. Frank, T. Sharon. Asymmetric-Asynchronous Technologies. Correspondence study Print-based Audio-based Video-based Computer-Based Training (CBT) Web-Based Training (WBT). 2. Computer-Based Training (CBT).

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Asymmetric Asynchronous Distributed Education (2)

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  1. Asymmetric AsynchronousDistributed Education (2) A. Frank, T. Sharon

  2. Asymmetric-Asynchronous Technologies • Correspondence study • Print-based • Audio-based • Video-based • Computer-Based Training (CBT) • Web-Based Training (WBT)

  3. 2. Computer-Based Training (CBT) • Instruction delivered on a computer without instructor’s involvement. • Delivery media: • Diskettes • CD-ROM • DVD

  4. Modern MM CBT • Multimedia, Hypermedia, and a still-developing generation of powerful, sophisticated, and flexible computing tools have gained the attention of distance educators in recent years. • The goal of computer-based multimedia is to integrate various voice, video, and computer technologies into a single, easily accessible delivery system.

  5. Advantages of CBT • Multiple Modes of Learning • Good for drill/practice/simulations • Immediate feedback • Self-paced • Increased learner centeredness • Multimedia support • Cost-effective

  6. Limitations of CBT • Access to computer and computer literacy is required. • Requires large storage capacity. • Platform dependant • Lack of instructor • Limited interactivity • Computer technology is changing rapidly. • Costly development and revisions.

  7. 3. Web-Based Training (WBT) • Instruction delivered via a computer connected to a network (Internet or Intranet). • Delivery Media: • HTML (and other markup/scripting languages) • Audio streaming • Video streaming

  8. Audio Streaming • Provides audio track for "still" images such as PowerPoint slides, spreadsheets, text screens. • Requires "player" specific to streaming system/software used.

  9. Video Streaming • Works best for “talking heads“; full motion or high detail stream difficult. • Requires "player" specific to streaming system/software used. • Requires considerable hardware, software and network resources. • Number of on-line users can affect backbone network performance.

  10. Advantages of WBT • Facilitates "one-stop" access to up-to-date course content, assessment tools, and interaction components. • Immediate feedback • Self-paced • Learner centeredness • Platform independent • Multimedia support • Provides security and authentication • Provides student tracking

  11. Limitations of WBT • Access to computer and computer network literacy is required. • Connection to the Internet is needed • Reliance on Internet and ISP • Danger of viruses • Lack of instructor • Limited interactivity • Internet technology is changing rapidly • Lack of standards

  12. Support Technologies • E-mail and file attachments • Bulletin-Board • FAX • FTP

  13. E-mail Advantages • Connections can be made at any time. • Messages sent to one or many. • Complex ideas can be discussed. • Computer files can often be attached to messages. • Multiple messages can be accessed at one time.

  14. E-mail Limitations • No pictures, video or audio unless downloaded as a file or support for MM-Mail. • Need computer and mail software, modem or network connection. • Response time (to sender and back) may be uncertain. • Mail can get lost.

  15. Bulletin-Board Advantages • Multiple topics or ideas can be discussed concurrently. • Same advantages as E-mail, with more control and functions.

  16. Bulletin-Board Limitations • No pictures, video or audio • Need computer with modem or network connections • Online time can be extensive and expensive • Bulletin-board system requires one line for each connection to it

  17. FAX Advantages • Uses POTS lines • FAX has become a very widespread format available in many locations • Easy to use, requires little training • Text, pictures and graphics can be transmitted

  18. FAX Limitations • No video, animation or sound • Must have fax machine at both locations • Usually only black and white • Some fax paper is low quality • Quality of copy varies greatly

  19. References • University of Maryland University College, Models of Distance Educationhttp://www.umuc.edu/ide/modlmenu.html • California State University at Sacramento, Distance and Distributed Educationhttp://www.csus.edu/iaup/review/html_t/t08.htm • Engineering Outreach at the University of Idaho, Distance Education at a Glance http://www.uidaho.edu/evo/distglan.html • University of Illinois, An Introduction to Distance Learning Technology http://www.outreach.uiuc.edu/ws97/intro/index.htm

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