摘要：The idea of reusable learning objects (RLOs) originated as an element within a new type of computer-based instruction grounded in the object-oriented paradigm of computer science. Object-orientation highly values the creation of components (called “objects”) that can be reused (Dahl and Nygaard, 1966). As early as the mid 90’s, it was recognized that Web based learning systems lacked the support of a common framework. One of the efforts to solve this problem was initiated by Cisco Systems (Barritt and Lewis, 2000). Cisco proposed the so called Reusable Information Strategy to move from creating and delivering large inflexible training courses, to database driven objects that could be reused, searched, and modified independently from their delivery media. Additionally, the Department of Defense along with some other Federal and private sector organizations initiated efforts to develop common specifications and standards for technology-based learning. These efforts led to the development of a suite of technical standards referred to as Sharable Content Object Reference Model (SCORM). The value of SCORM is that it incorporates many of emerging standards and/or specifications into one common reference model.
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