The current study investigated the ways that kindergarten teachers change or maintain the environment in a classroom, and the relationship between their choices to do so. Specifically, we examined the way that teachers react to the surfaces of walls, picture book racks, and tatami corners which have tatami mats, a round table, sofas, and a play kitchen. Case study data were collected through photographs and observations of childcare in kindergarten classrooms. They were put in chronological order and qualitatively analyzed. The results revealed a range of visible and invisible ways that teachers changed or maintained their classroom environments. The data also revealed a relationship between the teachers’ decision to change or maintain the classroom environment.