-The SVT courses are adapted from middle school to the final S option SVT (we will see each lesson there by replacing point by point the key words and the most significant stages of each chapter. Obviously, I will adapt to the student pedagogically , according to his way of reasoning and his main difficulties. Finally, the methodology of writing can be approached according to the student). -The math lessons are rather intended for college students and Seconds to see first scientific baccalaureate (We will first take the course point by point and ensure its understanding then, nothing like exercises to better understand and assimilate the lessons). -The nutrition courses will be those taught in BTS Dietetics (We will see the basics of nutrition (metabolism, AET, calories, nutrients) and will study each population according to their nutritional needs. Finally, we will establish a food plan, menus adapted to the type of guest and a nutritional assessment).