We installed a wooden lattice of 9cm square cedar timber into existing RC structure. The space is divided by 1.3M high walls and the sliding doors attached to this grid. This wall provides children a space like a house, and gives teachers a space in which they can overlook the entire space. In addition, the grid of wood is used as lighting fixtures, rails for decorating children's works, window flames and curtain rails that divide s space freely. A grid of cedar timbers support children's and teachers' daily creative activities, and children's healthy growth.