SCORM's Content Aggregation Model "can only describe structure-oriented relationships and cannot express semantic relationships." So argue the authors, who set about describing an alternative set of relationships, drawn from various instances of instructional design theory, such as "Evidence", "Proof" and "Demonstration" - a set of 24 semantic relations in all. The paper then digresses through an entirely needless study of 30 graduate students to reduce the set to 17 possible relations. This article, plus the next two, are from the current issue of Educational Technology & Society, just released.
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