数学作业的重要作用在于,学生通过解题时的积极思维,更深刻地理解进而更牢固地掌握数学知识,更灵活地、综合地运用数学知识.为了达到教学目的,教师通常会根据授课内容和学生实际水平选配一定数量的练习题,让学生解答.这种与授课内容有紧密联系的习题,若称之为“题内题”的话,那么,与授课内容“似是而非”、“似非而是”或“完全无关”的一些非正统题,则可称之为“题外题”. The important role of math homework is that students can gain a deeper understanding of maths knowledge through a positive thinking of problem solving so as to use mathematics knowledge more flexibly and comprehensively.For teachers’ The actual level of students matching a certain number of exercises for students to answer.This problem is closely linked with the content of the exercises, if it is called “questions within the title”, then, and lectures “plausible ”, Some non-orthodox questions like “non-true” or “totally unrelated” can be called “extra questions”.