Ui, on this site is something going on. Who helps to find the right building materials? The children learn how to build a house step by step and to find out what kind of work and materials are needed. The adults support the children by declaring and naming construction work, building materials and vehicles after the six building lots. When navigating the road network between construction sites, the kids also train their fine motor skills. Then the children let the colorful trucks ride along the streets. With the help of the small trucks, the children now transport the wrongly supplied building material to the right construction sites. Depending on the development stage of the children, only three and later all construction sites are to be supplied. In assigning and discovering the colorful construction site, the everyday knowledge and logical thinking of the little ones is stimulated playfully. For older children, game variations with first rules are possible and the color cubes are used.