I teach mathematics based on the official program but taking examples from professional life to show the practical interest of mathematics. I illustrate the theoretical parts with concrete cases to visualize the basic concepts and allow a better understanding, more intuitive and natural, which promotes memorization. I use the exercises to train the student while having fun. We review the theoretical lessons together and we redo the exercises and tests together. This way, the student memorizes the concepts better. Lessons take place at the Porte de Namur office or at the student's home (center of Brussels). I am a computer engineer, project manager in a large international company. I followed the classic path of French engineers, from primary school to the Grande Ecole (Ecole Centrale de Lyon). I am now based in Brussels and give courses in Brussels or remotely via Skype/Teams...