A compact textbook for teaching and practice that visualizes and explains complex mathematical concepts through practical examples. It covers the curriculum for vocational schools and technical academies and serves as preparation for the supplementary examination in mathematics for technical and non-technical fields. The focus of the learning process is on self-organized and self-directed learning by adult students. Learning involves acquiring relevant educational knowledge, practicing instrumental skills, applying specific work techniques, as well as developing conceptual thinking, productive thinking and creation, and independently tackling job-related tasks.