Student in the second year of engineering school after a prep BCPST and a baccalaureate S, I propose courses in all science subjects for levels from high school to high school. I know how to adapt to the level of the student to help him in his difficulties and push him to give the best of himself. In each class, I propose a review of the classroom course and exercises chosen to target the key elements of the chapter. After each lesson, I provide one or more worksheets so that the student continues to train regularly.