The main objective of this work is to make a proposal for continuous improvement on the use of short educational videos in order to improve the teaching-­learning process at Mathematics I, a university subject present in the curriculum of several social-­economical degrees such as Bussiness Administration, Economics, or International Business at the Universitat de València (Spain). In order to enhance the quality of this process, it is necessary to make inquiries of the impressions that the students have about it. In this particular case, we wanted to know the perception that students had after the use of short educational videos of applied mathematics contents during the course. These videos were carefully created by their professors in order to promote autonomous and active learning. Thus, we developed an opinion survey to gather their opinions. This survey measured the students' perception on the degree of usefulness of the teaching materials of the subject and, in particular, the degree of satisfaction on the short educational videos. The results show that, in general, there is a high degree of satisfaction in the use of these videos for self-­learning of mathematical concepts. Suggestions from the students allowed us to adopt improvement measures devoted to upgrade the quality of the teaching-­learning process.