Characteristics of the research object of mathematics textbooks and methods in primary and secondary schools: The research object and scope of mathematics teaching methods in primary and secondary schools include not only the following general mathematics teaching problems in primary and secondary schools, but also the research on mathematics curriculum problems in primary and secondary schools. Therefore, the research objects of primary and secondary school mathematics teaching methods mainly include primary and secondary school mathematics curriculum objectives, primary and secondary school mathematics curriculum content, the logical basis of primary and secondary school mathematics content, the process and method of primary and secondary school mathematics teaching and learning, primary and secondary school mathematics teaching methods, primary and secondary school mathematics curriculum and teaching evaluation, the process and law of primary and secondary school students learning mathematics, and the analysis of the specific content of primary and secondary school mathematics. Of course, it also includes the modern basic research of mathematics in primary and secondary schools and so on.