I first explain the course interactively with some examples and interesting anecdotes to make the course interesting. Then, I tackle standard exercises by level until I master the chapter. The courses are aimed at high school students or first year prep students. Mechatronics engineer, I also give lessons in physics-chemistry, mathematics and computer science. I have always had a passion for science but also for transmission. I very often give lessons to relatives and friends and I see their progress. I was even able to give high school lessons in France. I really enjoy teaching and seeing people progress and overcome their shortcomings. I would like to be able to make my knowledge available to pass it on to other people.