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** Invited as a paper from E-Learn 2003 ** The purpose of this article is to provide five empirically-derived guidelines for knowledge map construction tools that facilitate problem solving. First, the combinational representation principle...

The purpose of this paper is to suggest a conceptual framework for categorizing visual representations in terms of definition, instructional use, previous research, and examples. This analysis describes forms of visual representations that can be...

The interface design of mobile products such as the Personal Digital Assistant (PDA) has become a hot issue recently. A variety of products are being rapidly developed for extended usages. However, the design of mobile device interfaces is still...

Compared to face-to-face learning, online learning has been criticized as deficient in providing the social interaction needed for construction of knowledge in complex learning domains. Online discussion has been used to bridge this gap and produce...