This MasterPieces 24pc 18"x24" Head, Shoulders, Knees, and Toes Sound Puzzle is sure to get your child singing and learning with its catchy classic tune. Our 24pc Sound Floor Puzzles are both educational and fun. Complete the puzzle and push the button to sing "Head, Shoulders, Knees, and Toes" and learn your body parts. Our Sound Floor Puzzles are perfect for children ages 3-8.