Mathematics is used in virtually every career. Moreover, apart from academic success, they are fundamental for the intellectual development of children and adolescents. Having developed a good foundation in mathematics in secondary school did not limit me in my choice of studies in higher education. It has indeed made it easier for me to succeed in most courses at the university, and I am currently studying for a master's degree in management engineering at the ULB. I have been offering my tutoring to high school students for three years now. I often notice that difficulties in math stem from a lack of basics. Therefore, in my teaching strategy, I do not hesitate to recall the basic notions and to offer exercises and homework personalized to the specific needs of the student.