In this article a curricular guide to progress in the levels of understanding is presented, a summary of the characterization of the understanding performed for each of the participants and the evolution of the evaluation rubric called Descriptors of Category by Level, which objective was to help three students of rural zones of a municipality of Antioquia (Colombia), in the analysis of the understanding of the geometrical concepts of perimeter and area and the independence of their measures within the context of the agriculture of coffee. In order to