Publicación: Proyecto de Intervención Educativa (PIE) en la enseñanza de la representación de la línea, en estudiantes de geometría descriptiva de las instituciones de educación superior públicas de Bucaramanga
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In this research work the didactic strategy was integrated in the teaching of the representation of the "line" in the course descriptive geometry in two Institutions of Higher Education (IES) Bucaramanga by means of the didactic resource that was designed in a physical and digital way in such a way that it was applied in the virtual learning environment, for its execution and the improvement of this teaching practice. The methodology that was applied in the work was intervention research or also called action research, in which the two author professors worked with students enrolled in the course of descriptive geometry in IES 1 and 2, where the population were the groups assigned to their loads in an academic semester of the year 2020, formed by the groups H2, PO1, A115 and E111. The sample size is calculated according to the simple random sampling (MAS) statistical scheme under the assumption of normal distribution of data. For these populations, two separate statistical hypothesis tests were applied to each HEI: the difference in mean and the difference in the proportion of two samples, on the variables of the rating of the line concept X_1 and the rating of the final grade of the course X_2. The results of these hypothesis tests were the same for the two HEIs, 1. The average grade of the line concept is equal to the average of the final grade and 2. The proportion of students with the highest grade equal to 3.0 in the line concept is the same as of the final grade. These results are given at a 5% level of significance or error.