The title of this learning session is: We identify the elements of the prisms when building boxes which is designed for the Fourth Grade of the primary level. The first part develops the entire meaningful learning session considering the purposes and evidence of learning, the crosscutting topics, the strategies to achieve the established purpose, the means and materials to be used and the instrument of Evaluation. In the_x000D_ sequence, as in every learning session, pedagogical processes and teaching processes are taken into account, in this case the area of mathematics. The second chapter addresses everything related to theoretical sustenance, starting from the definition of a polygon its elements and classes; then we talk about the geometric bodies or solids that are divided into polyhedrons and round bodies, in this report we only touch thepolyhedrons, because these are closer to the...