Maria Montessori based her basic idea of education on insights of development stages of children's sensitivities. Fulfilment of this development stages is based on two hypothesis, children have inborn forces for self-development and this inborn forces are activated if children are surrounded with suitable environment (Matijević, 2001). Montessori educators have a task to prepare suitable environment and materials that will encourage children's self-activity. They are not a teacher or lecturer, but a person that gives initiative instructions and a person that directs and encourages activites of every single child. Every child develops differently, in its own pace, and every child has its own internal needs which appear in different time. Therefore, Maria Montessori advocates individual education. Materials and environment are very important part of child's self-education. They need to give support for child's self-development. All materials in Montessori environment are neatly arranged and there's only one set of every sort of material. While one child is using some material and some other child is interested in using the same material, it has to wait until the first child is done with the activity. This is very important for child's social development because it teaches children how to be polite while communicating with others. Montessori pedagogy is based on freedom. Therefore, child initiates and manages activities which are result of its needs and interests. While having freedom to choose its own activities, child is learning to make its own decisions, it is learning what creativity is. Educator is showing the children how to do art activities all by themselves. Child chooses what type of art material it wants to use and it chooses a topic of its piece, while educator, without speaking, shows the child how to use this material. Duration of this activity depends on the child and on satisfaction of its needs.