In search of a creative and interactive way to teach letter Than a nice activity is to play the letter O puzzles by My Coloring Pages Online! The letter O puzzle is a game for young primary school age kids. In order to complete the letter graphics, students click and drag the puzzle pieces. Kindergarteners will love Playing our letter O puzzle and having fun. The puzzle is a fantastic tool for passing the time and engaging in something you find fascinating. Enjoy yourself while using a PC, iOS, or Android smartphone to play the letter O puzzle online.