I would like to know if the following abstract is grammatically correct. 

Abstract. Dealing with the specificities of each student is an outstanding problem. Researches show that students learn more in less time when content is tailored to their learning styles. For that, we can use learning objects (LOs) shared by means of their metadata. The low availability of LOs and metadata is the main bottleneck of reuse of educational content. A promising solution for this challenge is the use of Semantic Web technologies in the intelligent reuse of content for the automatic construction of online courses and support materials for face-to-face courses. This contributes to the expansion of the offer of courses and to access to Education of all social classes.