The main purpose of this research was to evaluate how teaching strategies influence the development of mathematical skills in five-year-old children at I.E.I. No. 454 "Mi Casita del Saber," located in the city of Nauta 2025. To this end, a quantitative, applied approach and quasi-experimental design with pre- and post tests were adopted, allowing for a comparison of the achievements of an experimental group (n = 26) and a control group (n = 26). The measurement instruments were validated observation rubrics that assessed two skills: problem solving involving quantity and shape, movement, and location. The results show that, before the intervention, both groups presented similar performance, with average scores in mathematical skills (GE = 9,39; SD = 0,764; CG = 8,94; SD = 0.790). After implementing the strategies, the experimental group achieved higher mean scores in mathematical skills ...