The second volume of seventh grade mathematics must be brushed in Qidong Middle School. The second volume of seventh grade mathematics must pay attention to the basics and comprehensiveness, which is suitable for students who master the basics and do things slowly and steadily, while the junior middle school problem is a difficult problem and suitable for students who break through the problem. Qidong Huanggang Workbook: The arrangement system of mathematics is: knowledge system diagram, in-class exercises, classification, unit tests, mid-term and final tests, and some exercise reference answers are attached. It is an ideal counseling material to guide teachers' teaching, students' self-study and family supervision and inspection of students' learning.