1. Finished. Fully explain the content of the textbook, so that the important and difficult points must be solved, the doubts must be answered, and the expansion points must be discussed, which is convenient for teachers to attend classes, students to learn by themselves, and parents to guide them.

2. The data method is new. Timely capture the latest science and technology related to the content of teaching materials, so as to synchronize new science and technology with teaching; Collect the latest trends of the author's works in time to synchronize the new trends with teaching; Keep abreast of the latest education and teaching methods, so that the new methods can be synchronized with teaching. There are many experts and consultants. The members of the expert advisory group of this series of books cover 16 famous education experts at home and abroad, which are distributed in more than ten provinces, autonomous regions and municipalities directly under the central government, providing a strong guarantee for the scientific and practical nature of this series of books.

4. Strong after-sales service. "Jinxing Primary School Classroom Online" has created a platform for readers to communicate with educational experts and subject editors through the Internet and telephone, and answer questions for everyone free of charge. The "National Famous Teacher Club" invites famous teachers and experts from all over the country to join us and share the latest trends in primary education and teaching and the results of teaching and research, so as to better serve readers.