The necessary innovation in the processes teaching and learning of mathematics, having as reference the advance vertiginous of the Information Technology and Communication ICT, make school environments evolve, undertakes to investigate new models of pedagogical intervention in the classroom, using digital resources, many of them available in virtual repositories, like Interactive Learning Objects, ILO, as they were put at the service of the educational system in the area of Mathematics, by Descartes Digital Education Network. These models should be tested to determine its reliability and efficiency. Therefore within the research program “Pedagogical appropriation of ICT in Innovative Schools the Center the Innovation Educational Regional, CIER West”, was conducted the research project “Impact Assessment Using Interactive Learning Objects through Descartes JS Tool with math students Fourth and Fifth Grade Primary” by the University Institution Pascual Bravo, in the Innovative Schools, Debora Arango Perez the Medellin and the Primitivo Leal of Sabaneta, the results are the subject of this Article