Because the ball at the tip of the carbon pen is easy to slip, it is difficult for first-grade children to control it, and it is easy to make posture mistakes, but it is twice the result with half the effort. Secondly, practicing hard-pen calligraphy requires copying and understanding the shelf structure of words, which is too demanding for first-grade children and difficult to achieve. However, these problems can be avoided by using pencils because mistakes can be erased and changed.