What I propose: - answer your various and varied questions (to start); - test your general knowledge with multiple choice questions and quick feedback on the part of the program already done. - develop a personal program according to your level: support the difficulties, maintain the achievements (my courses are obviously for students of all levels, whether you're aiming for the average, 15 or 20) - to realize with you different subjects -> if you are in high school, we will train on all the subjects type Bac: restitution of knowledge, QCM, analysis of document (that is to say type 1, type 2A and type 2B in the jargon of teachers of SVT). The subjects I choose are drawn from the annals of the whole world or from subjects on which I had trained myself; - I can also tell you about my work methods, help you to do exercises of your choice, provide you with balance sheets ...