The nursery organised on two levels is shaped as an urban puzzle. The main idea is to rebuild the puzzle of the existing park, which will be extended from room to room, replacing step by step the existing construction in the future.  Therefore the project is made of 7 prefabricated modules that can stand individually or together to offer the desired configuration. This prefab system reduces the ecological footprint and the cost. Each section is south east or south west oriented to get the natural light needed. Those different spaces and the quality of the architecture invite children to discover, dream, meet each other, meanwhile the spatial organisation offers a clear and rational lecture of the project and its circulation.