Tongcheng has practiced every homework and every class. The homework book in class: Mathematics (the first volume of the seventh grade) (the new curriculum standard Zhejiang Education Edition) has two columns, namely "homework in class" and "homework after class". Each column is based on grasping the characteristics of new teaching and giving full consideration to students' cognitive laws. The setting of questions should adapt to the actual situation of classroom teaching and after-class consolidation as much as possible, so that the functions of each column can be implemented; In terms of questions and difficulty, ensure that it corresponds to the relevant content presented in the textbook, and do not arbitrarily increase the difficulty; When compiling topics, we should follow the principle of combining originality with classics, fully embody its novelty and applicability, and strive to make each topic have its own unique value, so as to achieve twice the result with half the effort.