预习是指让孩子在老师上课之前自己先熟悉教材,了解相关的知识,思考解决问题的方法,是一种重要的学习方式。简单的问题学生自己解决,培养了学生的学习能力,同时为有限的课堂节约时间,用于研究更有价值的数学问题。预习既可以让成绩好的学生有展现自我的机会,也让后进的学生在平和的状态下接受新知。 Preview is to allow children to class before the teacher familiarize himself with the teaching materials, understand the relevant knowledge, think of ways to solve the problem is an important way to learn. The simple problem students solve themselves, cultivate students’ ability to learn, while saving time in limited classes and researching more valuable math problems. Preparation can make good students have the opportunity to show themselves, but also to enable students to recede under the peace of the new knowledge.