The objective is to obtain the Bachelor's Degree in Primary Education with the application of the model class called: We represent and interpret bar graphs in grids, in the area of mathematics in the 40 students of the 2nd "A" of the Emblematic Educational Institution San Juan de la Libertad-Chachapoyas with a duration of 45 minutes on December 19, 2016, starting at 9: 00am. and ending at 9:45am. For its execution, the design of the implemented learning session that contains the general data, expected learning, evaluation, didactic sequence with the three moments of the session, pedagogical processes, strategies, means, materials and time was taken into account; with their respective theoretical support._x000D_ Concluding from the theoretical support_x000D_ The procedure that allows us to find the bar graph more easily is the manipulation of the concrete material relating it to some obje...