Piece together playtime with this circular puzzle with built-in tracks for wind-up vehicles (no batteries required)! The 48-piece oceanside-themed cardboard jigsaw floor puzzle can be put together as three separate rings or as one complete circle. A groove in the inner ring lets the wind-up boat cruise past sea creatures and the numerals one through 10 to promote number recognition and counting. The outer ring has a track for the wind-up school bus to drive by the letters of the alphabet and pictures that start with each letter (in English). Sing along as the bus goes round and round! This fun and educational puzzle and vehicle play set measures 27 inches in diameter when complete. When kids work on floor puzzles, they are fine-tuning their gross motor skills, improving their hand-eye coordination, and strengthening their problem-solving skills. This high-quality Melissa & Doug puzzle makes an exceptional gift for preschoolers and school-aged kids for hands-on, screen-free play.