This document describes the process, result and result analysis, planning and development of iZafiro, a software tool to support dramatization sessions of the Proyecto EJE or Simulacion Dramatizada methodology, about some of the topics about fractional numbers for children between 9 and 10 years, including the result of the de-velopment and implementation of a pilot test of usability applied to one of the courses of fourth degree at the Agustiniano Ciudad Salitre College. The objective is create a software tool as a product, to seek a different way to perceive mathematical expertise, through a video game.