Because of the strong consistency of mathematics, the mastery of junior high school knowledge has a great relationship with the learning of senior high school knowledge (this mainly refers to your study habits, learning methods and various abilities); There are some blind spots in the current textbooks for junior high school and senior high school (junior high school is either blank or not deep or the key points are not prominent, but senior high school learning needs to be mastered, so many students are very uncomfortable after entering senior one, and their grades have dropped greatly, which is one of the reasons. It is also the reason why all kinds of junior high school mathematics convergence training courses are hot in summer. ) The junior high school contents involved in Senior One mainly include: power operation, roots, quadratic functions, solving equations and inequalities, solving right triangles in circles, trigonometric functions, similar triangles and related knowledge, with emphasis on power operation, roots, quadratic functions, the relationship between roots and coefficients of a quadratic equation, simplification and evaluation of algebraic expressions, factorization and so on.