The reference magazine for middle school mathematics teaching, initiated by the pioneering team of Shaanxi Normal University Education Publishing Group, has begun to take shape, although it was founded less than a year ago. Its magazine "Middle School Mathematics Teaching Reference" has been changed from bimonthly to periodical, and its website will be launched soon, and its diversified business is being actively explored and developed steadily. A new business model of "publishing, books, network disk interaction, research and development, product service integration" is taking shape. The national core periodical of primary and secondary education is headed by the Ministry of Education of People's Republic of China (PRC) and sponsored by Shaanxi Normal University, a university directly under the Ministry of Education. Since 1972 was founded, it has spread all over the country and can be ordered by post offices all over the country. The standard serial number of China is ISSN1002-2171,the foreign language code is M4267 and the mailing code is 52-30. There are: special articles of this journal, special planning, mathematical time and space, problem-solving center, online examination, teaching and research guide, wide angle of several gardens and other columns.
A.20 14 codes of various majors of China West Normal University
I had it when I filled out my volunteer.
B. What are