The main profiles of my work are mathematics and computer science at the extracurricular level. What are they? Olympiad mathematics of any level for schoolchildren of all ages. I am author of books and materials on Olympiad mathematics and, as a hobby, I myself am engaged in translating and solving problems from the national stages of different countries (for this I have to learn many languages, but for a real mathematician this is not a problem). Preparation for transfer to strong physics and mathematics schools and universities. Basically, for the successful passage of the entrance examinations, a deep knowledge of school mathematics and basic knowledge of the Olympiad is required. Preparation for admission to higher educational institutions of any country (mainly Russia, UK, Israel, France, Germany and USA). Preparation for the main final and entrance tests. If you want to enter a country whose language I do not know and you are ready for the fact that I will explain the material in Russian, English or French, this is not a problem. If you have examples and a program of entrance tests, I will be ready to give you a discount and start learning the language of this country myself;) Preparation for top USA universities. The applicant's portfolio plays a very important role in admission to USA universities. One of the chances to impress the commission is successful scientific work while still in school. In fact, participation in scientific conferences is real for any motivated student. But it is worth remembering that often an application for a decent level conference is required six months or a year before the conference itself, and the first portfolio is submitted to the university almost a year before admission. Therefore, if your child has a dream to study in USA, you should start preparing a portfolio as early as possible! Preparation for admission to master's, PhD or MBA programs usually consists of preparation for the GRE subject math or GMAT. Specific subjects in the field of mathematical modeling or programming (only in the C ++ programming language). Algorithmics in Olympiad Informatics, Algorithmics and Mathematical Modeling in Science (I undertake this only if the student has a deep understanding of the research topic, and not for all topics).