There were unrepressed children's thoughts throughout. In the empirical story of the traces of leaves that caterpillars have gnawed. In other words, we can infer their habits, characteristics, family relationships, status of the ego, emotional states, mental states, and creativities from the stories that the children created. This means the children did not show direct emotions, but their present feelings in experiencing ‘the method of eaten traces.’ In childhood, children will be most influenced by the environment. The environments is provided by parents, friends, teachers and other influences. In these environments, children used the language which is closely related to their environment in their empirical stories. Also, they can express their desire without any struggle and adjust their ego without showing hardships. We can learn the children's characters from the characteristics in the story. Through the stories we can see children's emotional background or sensitive response of interaction of past emotional environment and present feeling. In addition, normal, aggressive, regressive, or inadaptable feelings are expressed in the language of children within an age group. The ability to recognize colors enables children to control their feelings and expressions about the changes of textbooks along with their inner world. They use a lot of expressions to describe the changes of textbooks, and their illustrations show their preferences of colors somewhat. In the case of the 4 to 7 age group, the concept of color does not mean much, and the object itself is more important to observe. Color is not related to the mental state, and the most impressive color in a picture is recognized as their favorite color, so that their preferred colors often change depending on the pictures. The methodologies of these textbooks, ‘traces of leaves caterpillars gnawed,‘ help children not only display their emotions and have satisfaction which increases self-confidence, but also improve the language ability as well as fill their wants. There is one point of sameness to talk over and share with among children while they read the books: the pictures enable kids to express their mental state, explore their identity, understand themselves, and grow their social abilities and respect for other people.