Chemistry and biology course dedicated to primary, middle and high school students (+ Entrance exam in medicine and dentistry). I approach the subject according to the level of the student. The first class will be devoted to see the level of the student (test, oral questions) and the difficulties he encounters. Then we proceed with a system of session of two parts: a theoretical part then a session of exercises. The student will have tests from time to time to make sure he understands the materials.