Scientific knowledge in the field of upbringing and education, the new circumstances of life and childhood caused the changed perception of the child. The child is no longer a predetermined object of the educational process, but becomes the author of its own development. Child work on the project is collection of themed activities that occur spontaneously when explored by children, educators and parents. The emphasis is on the way of acquiring knowledge, and not the content. By exploring, children develop various competencies useful for their entire lives, and the result is a collaborative learning. Child work on the project includes conditions that correspond to modern educational and upbringing process. Child learn by working their own way and pace, but also learn from each others. Educator is an observer and analyst, he encourages and promotes. Parent is an active participant in the educational process and the children's project. Child work on the project enables quality communication of its participants and improvment of educational practice, which directly affects the pleasant and successful process of deepening and expansion of existing experience and knowledge of children.