Web-Based OERs in Computer NetworksThis paper's researches have not only verified that the application of Open Educational Resources (OERs) into the learning process leads to a significantly improvement of the assessments, but also that the combination of several OERs enhances their effectiveness. These results are supported first by a study of both students’ opinion and students’ behaviour over five academic years, and, secondly, by a correlation analysis between the use of OERs and the grades obtained by students.