June 14, 2009
June 14, 2009
June 17, 2009
Computers in Education
14.191.1 - 14.191.9
An Experience on Learning Objects Reutilization based on Educational Resources Developed Miguel Latorre, Manuel Blazquez, Elio Sancristobal, Sergio Martín, Francisco Garcia-Sevilla, Gabriel Díaz, Catalina Martinez-Mediano and Manuel Castro
High quality content is not easy to find. Search engines are not suited for this task because they only follow hyperlinks. This technique is often ineffective at finding e-learning resources.
Learning objects are the answer to sharing, reusing and locating educational materials. Additional descriptions represented in form of metadata are required to achieve this goal, among other requirements. The information stored there is very important not only for institutions but for individual instructors or students as well. However, it takes time and experience for authors to create valuable metadata. Users -teachers and students- do not need to know learning specifications when they use standard compliant software (knowledge of the collection of TCP/IP protocols is not essential for a simple user), but it is essential for developers. Instructors cannot become expert metadata editors. Thus, a solution with the lesser intervention of the former is necessary.
Here is explained a short automatic metadata generation process for different courses about Electronics engineering. The results are collections of circuit simulations and tutorials directly available from a learning repository.
Electronic circuits almost have all the desired characteristics that learning objects need1. They are complete unto themselves to allow a student to easily apply them. Diagrams can be rather complex, or assessments of minimum size appropriate for their use. Objects may be as short as a single tutorial or a complete lesson. Language is not a barrier because schematics use a symbolic representation. Furthermore, cost is nearly zero with the help of free simulators or demos. Nevertheless, teachers and students need detailed descriptions of their contents to quickly locate them in a network.
The Learning Object Metadata (LOM) Standard represents an important step towards fostering the construction of a new generation of artificial intelligence-based Web Learning systems2. Learning object metadata cannot be distributed without using a common format. IEEE LOM3 is the basis of most metadata standards. This metadata element set is encoded in a binding, such as XML or RDF for computer processing4. Institutions select some elements or extend the default set to adapt the standard for their local education systems. Some of these profiles are CanCORE or LOM-es. Once all previous conditions are taken in mind, we can start to create our own metadata.
Till recent years, digital media production was not relevant on education. Most authoring software did not provide any information about user-created content. Technical requirements,
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