The purpose of this study is to make clear children's development of cognizance about living space, and based on this result,to present new orientation to arrange children's environment especially play lots. To attain this purpose a cognitive map is adopted, and it is analysed by children's cognizance toward buildings and regions. The cognizance of children develops, from perceiving buildings by
... [Show full abstract] fasade to perceiving them by site; from recognizing regions as topological space to recognizing them as euclidean space. So we conclude that it is important to locate play lots near the pathes in which children walk in ordinary life, and the buildings which children can perceive easily.