The purpose of this course is to help students improve in their classes. Overcome your difficulties by practicing with book exercises and previous exams (or exercises done by myself). I give courses in Mathematics, Physics and Chemistry at the end of CEGEP (DEC / BAC). How is the course: 1) With the student, I look at the points of the course he / she did not understand. 2) We review the course and make a draft sheet to hold the course. [The final form should be done by the student after the class for the next session] 3) I help the student to do book exercises and exam type exercises. To learn well it is necessary that the student identifies his difficulties is why, it is essential that before each course the student makes a list of points on which he would like us to work. And after each class, I will ask the student to make a sheet and then re-read the exercises we did together.