Since 10/24/11 In school number 27 was a week of natural science. As part of the week, a school-wide event “Intellectual Fun” was held between 9, 10, 11 classes, where children participated in competitions in chemistry, biology and geography with interest. In addition to the school-wide event, each of the teachers of the natural science cycle held two events within each parallel. Students in grades 10-11 tried their hand at the “Chemical Ring”, eighth-graders went through “Dedication to Chemists