Montessor pedagogy, developed by Maria Montessori, emphasizes the importance of creating a space that is aesthetically appealing, organized and adapted to the needs of the child. Maria Montessori is a pedagogue who worked at the beginning of the last century, but her pedagogy is still relevant today. The first part of the paper presents the basic assumptions and principles of Montessori pedagogy, and the second part of the paper shows the importance of a prepared environment and carefully selected didactic materials. The last part of the paper is dedicated to the role of educators in Montessori institutions and their role in the prepared environment. A prepared environment allows children freedom of movement, access to suitable materials and a structured sequence of activities. The materials in the prepared environment are specially designed didactic material that M. Montessori developed based on her observations of children and experience working with children. The educator is also very important in Montessori pedagogy, who must be ready to stand back, observe the child, then notice the child's interests and prepare the environment according to them to help the child develop.