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Abstract

The design and development of web-based educational systems for people with special abilities have recently attracted the attention of the research community. However, although a number of systems that claim to meet accessibility needs and preferences are proposed, most of them are typically supported by hypermedia and multimedia educational content that is specially designed for the user targeted group. Such approaches prevent their user groups (both learners and their tutors) from accessing other available resources. Therefore, it is important to be able to built generic e-learning systems that would allow the reuse of existing learning resources in different accessibility demanding applications. To this end, in this article we propose a methodology for defining an accessibility application profile that captures the accessibility properties of learning objects in a standard form and we examine its application to the IEEE Learning Object Metadata (LOM) standard.

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Content

K3 helps organizing a course with constructivist and instructional elements. It is used to run complex discussions and group work as presenting knowledge in a controlled environment. Besides basic functionalities like acting as a file server to exchange teaching materials and providing asynchronous communication, K3 offers: 1. A sophisticated system of intellectual, semi-automatic and automatic performance parameters as a means of permanent feedback and transparent gratification. 2. A MyK3 version to personalize the system for each user, be it a student or a lecturer. 3. Extended retrieval facilities. 4. A report generator to assemble a single student's or a group's contributions. 5. An elaborated administrator sub-system to enable the lecturers to organize their courses. 6. A visualization component, K3VIS to get a graphical, semistructured overview about a discourse. 7. A role system (moderator, presenter, researcher, and summarizer) to classify the responsibilities of students during a group work. 8. Typed discourse objects to organize and structure a discourse and allow ease of proximate actions, like retrieval and navigation.

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Date

10. 2.2008 14:22:00

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Date

22. 3.2008 14:43:03