A game for children is a way of expression. Through play, children learn about themselves and others, it is a primary means of socialization and creating links and friendships. The game is extremely important for the development of personality, habits and social skills of the child. Children learn through play, especially in the first six years of life, but also later. Games usually divided into functional play, symbolic play and game rules.When children play they need to learn to make contact with other children, to give and take from others, interact with peers, to see things from the perspective of another child, wait your turn, show respect for the rights of others, and resolve conflicts.Games and activities in environmental education is increasingly being applied in the pre-school age, to children, from an early age developed a love for the environment. Ecological education is the acquisition of modern knowledge, developing skills and attitudes of the Child on ecological processes, peculiarities and regularities in the environment. Environmental awareness of the child is the result of practical activities. The aim of the research is to examine how children interested in environmental activities, and whether the activity itself, acquire new knowledge and complement previously. In the implementation of the themes I used the action research, because action research fosters the knowledge and progress on a given topic. To check the knowledge I used evaluation sheets, interviews with the teacher, and leaves the experimental and control groups. The experimental group showed greater knowledge of even 4% of the control group. This result indicates that children more motivated research activities in nature, when they have contact with what they are investigating, but when the research is carried out in the room. The children showed great knowledge on the subject of environmental protection