目前,许多数学教师对课本中例题和习题的研究,不加重视,而对课外参考资料中的题目颇感兴趣,盲目地收集大量题目,让学生进行“大运动量”的练习,使学生整日遨游在茫茫题海之中。这种舍本求末、搞题海战的办法不仅给学生的学习带来繁重的负担,而且对培养学生的思维素质和数学能力、提高教学质量都是十分不利的。高考数学命题组曾指出:“所有试题的内容和表达方式都来自统编教材,绝大部分试题都可在 At present, many mathematics teachers do not attach importance to the study of examples and exercises in textbooks, and are interested in topics in extracurricular reference materials. They blindly collect a large number of questions and allow students to practice “big amount of exercise” so that students can do it all day. You swim in the sea of ​​questions. This kind of approach to solving problems at the end and engaging in naval warfare not only imposes a heavy burden on students’ learning, but it is also very unfavorable for cultivating students’ thinking quality and mathematics ability and improving teaching quality. The college mathematics proposition group once pointed out: "The contents and expressions of all questions are from textbooks. Most of the questions can be found in