The wheels on the bus go round and round! Once you complete this fun 12 piece Wheels on the Bus floor puzzle, place the sound module and sing away! This beautifully illustrated puzzle of a cartoon school bus riding through the neighborhood features the lyrics to this favorite nursery song. A simple touch of a button on the sound module and your little ones can sing along! Putting jigsaw puzzles together helps children develop hand-eye coordination, fine motor and problem solving skills, and they can sing along while they do it! Assembled puzzle measures approximately 24 x 18 inches. Requires 2 AAA batteries (included).LEARN A FUN NEW SONG – Once the puzzle is completed, children insert the special sound module and a fun melody is played. Children can sing along to the tune of Wheels on the Bus and celebrate a job well done!