Attention all little marble run fans! The components of this Junior Marble Run are very easily assembled so that the extra-large, colourful wooden balls can begin their trip over the construction site. Young motor activity beginners will be especially happy during their fantasy-filled play. The exciting construction site elements playfully teach the cause-and-effect principle. It´s expandable and combinable marble fun with a learning and "A ha!" effect! With this marble run, even small children can playfully experience cause-and-effect principles and the perception of rolling objects is trained. Due to the easy to grasp design, children are not overstrained while playing and the extra large balls provide a plus in safety and fun. The various components of the play set can be easily grasped and assembled by small children's hands. The well-known wooden train plug-in principle offers a variety of construction possibilities and thus stimulates the joy of experimenting and imaginative play. Compatible and combinable with the marble run Junior Playground 11379, creating lively play worlds that leave no room for boredom. Older children can also let cars or marbles roll on the wooden tracks.