In this paper differences between language, speech and communication is pointed out as different concepts, but closely related. The cognitivist, behaviorist, and generative theory of child speech development is explained. The language child development is presented from the earliest phases of childhood up to entry in to the primary school, as well as the importance and influence of child's development material environment. The paper describes the factors that influence the development of speech, and these are: biological and environmental factors. This paper describe how they contribute to and influence the child's development and child's speech. Furthermore is described the stimulating kindergarten material environment in which the child develops his / her potentials and abilities without hindrance and quality, and acquires and / or learns new knowledge and skills for the future. Speech, reading and writing development stimulation material environment distributed among the centers of activities and the indispensable and responsible role of the educator in that is described too. The differences in the appearance of the rooms and the offer of materials throughout the history and the role of the space are also listed. Furthermore, describe the appearance of the room and the similarities and differences of the offered materials and the environment in which the child develops and learns through play in different pedagogical approaches (Reggio pedagogy, Montessori pedagogy, Waldorf pedagogy). The competencies and benefits that a child develops in a stimulating environment listed in the National Curriculum for Early and Preschool Education (2014) are listed too. Finally, the difficulties that arise in speech and how the influence of educators, co-workers and the stimulating environment can contribute to the child's progress and help the child are mentioned.