由于数学学科的抽象性,传统的数学教材又缺乏学生熟悉的背景,给学生的认知带来了一定的困难。于是人们通过预习,一次又一次地给大脑以刺激,帮助记忆。大家知道学习的五大环节是:预习、听课、复习、作业、考试。预习作为学习的第一环节,它对提高听课效率,培养学生的自学能力,无疑起到一定的积极作用,故一直被广大教师和学生重视。新课标下的 Due to the abstractness of mathematics, traditional mathematics textbooks lack the familiar background of students, which brings certain difficulties to students’ cognition. So people used preparatory activities to stimulate the brain again and again to help memorize. Everyone knows that the five major steps in learning are: preparation, listening, reviewing, homework, and exams. Pre-learning as the first part of learning, it will certainly play a positive role in improving the efficiency of class, students self-study ability, it has always been the attention of teachers and students. New Curriculum Standard