It is sometimes difficult for the student to participate actively in the learning process due to the difficulty that teachers find when trying to cover all the contents of a course with sufficient time and attention. This lack of time prevents professors from properly stimulating the student's active participation in class, which is always necessary for achieving a deep and significant learning. The present paper describes a flipped-classroom-based methodology that fosters autonomous learning of applied mathematics contents using short educational videos. The use of on-line media learning resources has dramatically increased in the last decade in higher education, not only under the well-known flipped classroom approach but also as replacement of conventional face-to-face lectures. The application of this methodology will give professors more time to make students work actively and cooperatively at class in the application of mathematical techniques for solving complex exercises and problems.

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 Business 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.

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