All aboard the LeapBuilders 123 Counting Train! Build, create and learn with this interactive 19-piece train-themed block set. Kids can build using the easy-to-hold building blocks and double-sided learning blocks that feature occupations and numbers. Insert the 10 double-sided learning blocks into the interactive Smart Star cube and it will respond with educational songs and encouraging phrases about occupations and colors that enhance building play with learning content. Build on the Smart Star cube to trigger sounds. Press the question button on the Smart Star cube to hear learning phrases about occupations and colors. The music button plays five melodies and four learning songs. Use learning blocks from other LeapBuilders sets in the interactive cube to unlock additional content responses. Get building with smart blocks for smart kids. Intended for ages 2+ years.