The social environments based on the Web 2.0 paradigm have modified the way people behave on the Web. One of the direct consequences of this change is that the amount of online resources produced and shared by users has increased considerably. Amongst them, it is possible to find materials that can be exploited for educational purposes. For example, YouTube, Flickr, Slideshare, more and more often collect resources that can be used in educational contexts. In this scenario, finding methods to support the evaluation of the educational relevance of online resources is becoming one of the greatest challenges faced by the educational technologists today. In this paper we propose an approach for the evaluation of the relevance of educational resources based on recent advancements of Linked Open Data.