Playing activities composed of "field", "play (action)", "playing conditions" analyzed on physical and social aspects. In Nedu, "shita-machi" area in Tokyo, there is no larger playground, but around Nedu elementary school area connected some small playground organically functioned as a center core of playing environment for children based on sense of belonging on a community. On the other side, In a newtown, Hikarigaoka in Tokyo, they had two sense of belonging on a newtown area and a school district area so children chose a field for play made use of physical characteristics rather than social ones.
