The learning of the concept of infinity, mediated by information and communications technology (ICT) and under a didactic engineering approach, has been the objective of this research. Didactic engineering, with its different phases, has shown a path toward understanding this concept, which has been a true challenge for many mathematicians throughout history in terms of comprehension and application within various mathematical frameworks. The following process demonstrates the implementation of a didactic sequence that has revealed significant learning of the concept of infinity and its application in different contexts among tenth-grade students. Keywords: Infinity, Didactic Engineering, Didactic Sequence, Information and Communications Technology DOI： https://doi.org/10.35741/issn.0258-2724.58.4.59