Um modelo semântico para compartilhamento de recursos educacionais.

Abstract

The accurate representation of educational resources content makes the process of searching, selection and reusability much more easy and fast. This work discusses Open Issues related to representation of educational resources: i) resources with specific requirements, ii) dependence between resources and iii) heterogeneous structures for resources classification. In this context, this work conducted a preliminary study to characterize the occurrence of these problems in the field of computer science. The results showed that these problems are present and relevant in various areas of computing. Hence, this work introduce a new Conceptual Model to represent educational resources. This model allows the definition of different course structures and a better characterization of educational resources contexts by explicit declaration of specific requirementsand resources collections. To evaluate the proposed approach, three evaluation processes were conducted with the Conceptual Model and the sharing system that is based on this model. In the first study, a survey with teachers was conducted to verify their confidence in the effectiveness of this model. The second study aimed to evaluate the educational resources insertion process and the effectiveness of the Conceptual Model in the representation of educationa resources. Finally, the third study evaluated the access to educaional resources in the sharing system through the development of Web applications that use the query services. The obtained results show that the proposed model is capable of representing educational resources context and contributes in solving the discussed problems.