integration of technologies in mathematics graduation : Our Knowledge Publishing : 9786203632644 : 6203632643 : 19 Apr 2021 : This paper discusses the initial formation of mathematics teachers, focusing on the role of the teacher trainer in the disciplines of Mathematics Education applied to technology. It is noteworthy for addressing the integration of technology in the teaching-learning processes in mathematics undergraduate courses and, in particular, for analyzing the perceptions of teacher educators, the obstacles they face, and the interference of initial teacher education in their teaching practice. For this purpose, a qualitative methodology was used in order to understand the teacher trainer's perception regarding the constitution of their teaching practice in the subject of mathematics education applied to technology. In order to achieve the objective and answer the research questions, the data were constructed through a documental research, where some laws that govern the gr