Do you have trouble with math, you don't understand anything in physics class? Or quite simply, you usually understand well but today you are lost? Don't panic, everything can be learned and everything can be explained. By theoretical explanations, supported if you wish, by summaries of the material that we will build together, by question-and-answer sessions, training exercises by exercises, I will help you to understand, assimilate and master your subject as well as possible. I would share with you my knowledge as well as my advice as a student and former high school student. About me: I am a student at the polytechnic school of Louvain-la-neuve. As a student I know how difficult it is sometimes to learn and assimilate subjects. My first student was a family friend whom I helped in high school in subjects such as math and science. She had a lot of difficulties and failures and it turns out that following my lessons which lasted two months and the entire duration of her exam session during which I followed and supported her, she came out with a report card without failures and a very large positive difference in marks compared to her last. Since then, I have had the opportunity to help several students in their journey from the first secondary to the first year of university.