On April 10, Larisa Viktorovna Matushevich, a mathematics teacher and researcher, took part in a methodical landing at the Troebrat secondary school in Uzunkolsky district of Kostanay region in order to improve the professional competence of teachers at the target school and exchange experiences. In the course of her work, Larisa Viktorovna conducted a guest math lesson in the 6th grade”An analytical way to determine the dependencies between quantities”, where she showed various methods and techniques of working with students, as well as analyzed the lessons of the teachers of the host school.