In mathematics, application problems are divided into two categories: one is mathematical application. The other is practical application. Mathematical application refers to a single quantitative relationship, which constitutes a topic and does not involve the existence and relationship of real quantities. In China's mathematics education, middle schools can divide equations into equation application problems, inequality application problems, linear function application problems, quadratic function application problems, statistical application problems, geometric application problems and so on.
& gt junior high school for short. Junior high school is the primary stage of middle school, which generally refers to the nine-year compulsory education stage. It is a process of transition to high school and belongs to the category of secondary education. In China, the academic year system of junior high school is three years: Grade Seven (Grade One), Grade Eight (Grade Two) and Grade Nine (Grade Three).