Introduction: the technological culture of this century makes it necessary to analyze the technological skills developed by teachers, since currently Information and Communication Technologies (ICT) are present throughout the environment, including education, where they play the role of mediators to improve teaching and learning, so teacher innovation in the classroom and teacher effectiveness in times of pandemic are important. Objective: to examine the pedagogical use that mathematics teachers give to ICT in their professional practice and their effectiveness in remote teaching. Methodology: it was developed in phases, information was collected through interviews, non-participant observation, focus group and didactic analysis, with a sample of 17 basic and secondary mathematics teachers from different schools in the department of Atlántico. Results: Efficacy is evident in some teachers in remote classes, but the same does not happen in face-to-face classes, where it was found that ICT skills were underdeveloped. Conclusions: teachers make partial pedagogical and didactic use of ICT in their professional practice.