Experienced freelance teacher, I give Mathematics lessons in French and Arabic, at college and high school level. The course takes place in three stages: 1) Summary and explanation of the course or chapter to work with a summary sheet of the essentials of the course. 2) Do simple exercises to put the course into practice and apply an effective method of solving and writing exercises. 3) In a third step I give exercises with increasing difficulty that the student will do on his own to test him and put him in a condition to manage independently. We correct