The child enters this world very little developed from a cognitive point of view. What the child will know or will be able to do at some point must be learned, practiced, step by step. Knowledge is acquired through the use of previous experiences in newly created learning situations. In this sense, children need opportunities to interact with people and materials around them and to learn about nature. Experimental and discovery learning is based on the principle of active learning and direct involvement of participants who can more easily assimilate new information and knowledge based on their own experiences. With the help of the methods used, in particular, the experimental method and that of observation, preschoolers will become "little explorers" and will understand through play and scientific experiments, fun and easy to apply, with simple materials at hand, how they work. some elements of the physical environment finding explanations for various phenomena.