Preschool children can experiment with all kinds of track connections using over 25 components that can be combined in various ways. This is an extension of the Wonder Worker world. With so many combination possibilities, there is no wrong way to play. Where development comes into play, creativity and imagination: There are no limits to imagination when children creatively design their own track connections. Planning and construction: Preschoolers enhance their design skills and abilities as little builders while setting up their tracks and combining the parts into different creations.