[How to learn junior high school mathematics well] At the beginning of the composition

Mathematics is the gymnastics of thinking, as scientist Klein said: "Singing can make you glow with passion, art can make you pleasing to the eye, poetry can make you touch the heartstrings, philosophy can make you grow wisdom, science can make you improve your material life, but mathematics can give you all of the above!" It seems that such a good thing is for a primary and secondary school student to learn well.