This paper analyzes the perception, on the part of Grade students, of the availability of videos complementary to classroom teaching, as well as the moment of visualization of the same, with the aim of identifying their use pattern and perceived usefulness, an initial step towards future flip-teaching interventions. The analysis has been carried out in three groups, one of the Business Administration degree, and two of the double degree of Business Administration and Law, during the academic year 2018-19, in a quantitative subject (Quantitative Models), the content of which is necessary for subsequent subjects, including Operations Management, in the third year of the grade. The use pattern of the videos, which received a total of 7281 views, was analysed using the Box-Jenkins methodology, adjusting an ARIMA model and identifying the atypical values in the series. The results indcate that the students perceive these videos as useful, although more as a tool to help in the preparation of exams than as an instrument to review the contents. All authors have participated in the idea, study design, collection and/or analysis and interpretation of the data, in the draft of the paper and in the critical review of their intellectual content.