whiteboard without frame.How to let students write correct and standardized letters is the first step in writing teaching. Similarly , I used "psp" to make four-line grids into pictures. When guiding students to write letters, they use whiteboard pens to write on four-line grid. It is both intuitive and beautiful, and saves time and practicality. What needs to be mentioned is that in the later teaching of Chinese characters, I also use the whiteboard insertion and hidden display function to enlarge the words in the "Tian" character, so that the computer teacher can teach you to remember the words, strokes and choices of the words, so that the students Remember to remember when you learn a new word, remember it. When writing, students can also use the pen to write and write with the example. Through demonstration, comparison, correction, memory, writing and learning of pinyin and new words, there are rules to follow, which is fast and efficient.