GraviTrax Junior - Extension Trax Marbles Expansion Pack Interactive Toy 3y+ GraviTrax Junior is an interactive marble run system for boys and girls ages 3 and up: With GraviTrax Junior, children don't just build simple marble runs.By individually decorating with lovingly designed elements, children create their own themed worlds.GraviTrax Junior focuses on age-appropriate learning content.Motor skills and spatial reasoning are promoted through the free design of the marble runs. By exploring the rolling behavior of the balls, the principle of cause and effect is experienced firsthand. Playing with the (animal) figures and decorating the themed worlds encourages creative role play and children's imagination.With various extensions, children can enlarge their marble runs and redesign them again and again - long-lasting fun guaranteed.GraviTrax Junior offers children ages 3 and up a child-friendly introduction to themed marble run worlds.
