The following deepening work arises with the purpose of developing the competence of problem solving in contextualized situations to the students enviroment from the mediation of OVA for eighth grade. The design of this OVA is guided by the articulation of the theoretical foundations, situated learning and the Polya Method, an instrument to evaluate virtual learning objects in Probability from the Internal Didactic Transposition and the ADDIE instructional model. The preliminary data collection was carried out from the implementation of a diagnostic test that was evaluated from a rubric to evaluate the resolution of problems based on the Polya method, these two instruments were validated with the expert judgment technique. With the data from this first phase, in addition to the theoretical and structural elements mentioned in advance, the design, development and implementation of the OVA was carried out. The implementation of the OVA included the application of the final test, for the collection of data a posteriori and final analysis. Finally, the comparison of the preliminary and a posteriori data, allowed to draw the conclusions regarding the impact of the application of the didactic strategy, as well as to propose some prospects regarding its use in the future.