Resumen
The article focuses on opportunities that have been opened and challenges that it entails, by the application of the Internet and Web in educational systems. In order to promote the concept of "share and reuse" for educational resources, ARIADNE, the European educational digital library project, was initiated in 1996 by the European Commission's telematics for education and training program. The core of this infrastructure is a distributed library of digital, reusable educational components called the Knowledge Pool System (KPS) now actively used in both academic and corporate contexts. In ARIADNE, maintaining KPS quality is mostly a community issue supported by way of different roles for users. These roles reflect a document's life cycle and associated metadata. End users interact with the KPS through client tools; Java and Web applications insert documents and their associated metadata into the KPS, search for relevant documents, and download them from KPS. ARIADNE toolset enables those responsible for courses to plan interactions between teachers and learners or among learners. Nevertheless, a digital library of reusable educational components enables the sharing and reuse of such components, which remain costly to produce. In order to reach the required critical mass of teachers, learners, and reusable components, a library has to be widely deployed. Support for the community of diverse users is another requirement.