Maria Montessori's teaching concept was a departure from her contemporaries. At the heart of pedagogy is child. It contained a unique approach to the individuality of the child, which says the motto Help me do it myself. The motto refers to the individual approach to each child with the three-step principle. The child learns independence with the help of didactic resources and materials. The selection of materials follows four basic criteria. These are accessibility, encouragement of an active child's activity, appropriateness to needs and abilities, and identification of work errors. The materials are available to every child. They are always in the same place and the material is the same in all Montessori Children House in the world. It implies area for practical exercises, sensory abilities, language, math, cosmic education and music. The most famous exercise of practical life is silence. Sensitizing materials include wooden rollers for insertion, pink tower, brown stairs, red sticks, binomial and trinomial cube and imbucare crates. Language is encouraged by writing letters while learning on rough paper. The previous areas prepare the child for mathematics. The material is kinesthetic. Cosmic education teaches a child to make contact with the world. It prepares him for creating a positive attitude towards nature in the fields of geography, zoology, botany, ecology, art, astronomy, ethics, evolution and informatics. Music affects the child multiple times. The ability to listen, move and balance is created. Through the material of fungal bells and wooden cylinders, the skills of comparing sounds are developed.