The theme of this graduate thesis is to promote education and training for sustainable development through research activities with water application. Children of the earliest age begin to explore the world around them, and that is made available by nursery as an institution where most of the activities have a research character. Through research activities with pre – school children the aim is to encourage their interest in meaning, protection and preservation of water. Preserving the environment and rational use of energy is part of lifelong education that needs to start from early childhood. Pre-school age is a good time to set the foundation for developing an interest, knowledge and habit of preserving the environment. In terms of sustainable development, this means: personal development of the individual and the development of democratic relations as a driver of economic and ecological development directed towards rational management in accordance with the absorption capacity of the environment. Institutions like kindergartens play an important role in expanding children's environmental knowledge, encouraging the development of children's love for nature, developing skills, attitudes and skills that will enable them to live in harmony with sustainable development. Through practical work in the kindergarten „Srednjaci", it was shown that children from the earliest age have ability to learn about importance and ways of preserving water. Through the activities of research it was noticed: creativity, collaborative work among children, originality in expression, concentration on work and autonomy. The game with water is multifuncional because through the game children are encouraging and developing socio-emotional development, speech development, physical development and creativity development. We must not neither forget the role of the educator as a creative person sensitive to children's needs and ready to play an active role in children's research.