Abstract
The purpose of this thesis is to clarify the mechanism of children’s creative expression activity. At first I regarded children’s expression activity as the expression some kind of images into visual signs. With this precondition, I interpreted Onimaru Yoshihiro’s theory of stages of development. As well, using the image theory of Henri Bergson, I formed the logic of expressing images with visual sign. From this logic, I concluded that a double effort was necessary to enable children’s creative expression activity: to jump into the depth of thought and the sense, and form a complicated image, and to gradually express an image as a visual sign through trial and error.
