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Mathematical characteristics of the second grade of junior high school
There are many difficulties in senior two mathematics.

Its contents are mainly the relationship between numbers, various methods of quantity and measurement, various basic operations, basic quantitative relations and so on. As long as students are serious enough, they can get high marks in the exam. Junior high school mathematics focuses on cultivating students' mathematical ability, including calculation ability, self-study ability, ability to analyze and solve problems, abstract logical thinking ability and so on. The complex knowledge of plane geometry is added to the content, and the knowledge of algebra is systematically studied. Numbers are extended to rational numbers and real numbers, as well as simple linear functions and quadratic functions. It is a leap in mathematical thinking from special concrete mathematics in primary school to general abstract algebra in middle school.