When writing the foreword of a self-written book about calligraphy in the third grade of primary school, you can consider the following aspects: Introduction to the significance and value of calligraphy: In the preface, you can briefly introduce the history, origin, status and significance of calligraphy in Chinese culture. It is emphasized that calligraphy can not only improve personal cultivation, but also promote cultural exchanges and inheritance. 2. Explain the interest and motivation of learning calligraphy: It can express your love and interest in calligraphy. It can emphasize that learning calligraphy can cultivate patience, carefulness, concentration and other qualities. It can also improve aesthetics and cultural heritage. It plays an important role in personal growth and development. 3. Introduction to the types and characteristics of calligraphy: In the preface, you can briefly introduce the types of calligraphy such as regular script, running script, cursive script, official script, etc., as well as the characteristics and styles of each calligraphy such as the use of pen, structure, strokes, breath, etc. 4. To encourage the readers to learn calligraphy: At the end of the preface, you can express your encouragement and expectations to the readers, emphasize the importance of learning calligraphy, and provide some methods and suggestions for learning calligraphy, such as choosing a good calligraphy teacher, practicing more, paying attention to the foundation, etc. to stimulate the interest and motivation of the readers. 5. Prominent school's emphasis and support on calligraphy: In the preface, it can be mentioned that the school's emphasis and support on calligraphy education, such as setting up calligraphy courses, organizing calligraphy competitions, etc., demonstrate the school's advantages and achievements in calligraphy education, and enhance the readers 'learning confidence and motivation. The foreword of a self-written book about calligraphy in the third grade of primary school should be concise, clear, and clear. At the same time, it should highlight the advantages and interests of the school and the readers, encourage the readers to learn and participate in calligraphy education, and provide a good learning environment and opportunities for the readers.