The absence of mathematical skills makes part of the formative challenges currently facing Colombian Higher Education Institutions (HEIs) Being consequently Aware of the situation, denoting from the second academic semester of 2018 the Technological Units of Santander have consistently implemented the free course PREIN-UTS. This is an online training course mediated by the artificial learning web platform Khan-Academy, and it's directed at the first semester students with the aim of strengthening their mathematical pre-knowledge before they are accessing the institution. Therefore, the object of study is to analyze the implementation of the course in his first stage and how the students does use it to improve their learning in mathematics. The methodological approach is quantitative of exploratory type with the proper use of descriptive statistics in the SPSS software. The random sample was made up of new first semester students (N = 277). The results show implicitly the manner of solving exercises to increase the level of performance of the skills, in fact confirms and reveals that the activity students that dedicates the most time with average 340.97minutes and Standard deviation (SD) 413.27. Finally, it was concluded that Khan-Academy enables the creation of free easy-access courses that can be used for the benefit of students who want to get into Higher Education to encourage their mathematical skills.