This article examines the Montessori educational system and analyzes its role in facilitating the sensory development of preschool and primary school-age children. The theoretical foundations of the method are revealed, including the concepts of the "absorbent mind," sensitive periods, and a prepared developmental environment. Particular attention is paid to sensory materials as a means of shaping perception, developing cognitive abilities, independence, and self-regulation in children. The article describes the structure of the Montessori environment, the principles of working with teaching materials, and the role of the teacher as an observer and facilitator in the educational process. It emphasizes that sensory education in the Montessori system is essential for intellectual development, the development of abstract thinking, and the successful socialization of children. It concludes that this pedagogical technology is highly effective in today's educational environment.