法国著名的微生物学家巴斯德曾经说过:“在观察的领域中,机遇只偏爱那种有准备的头脑。”这句话告诉我们,有着充足的思想准备、知识储备、能力积蓄的人更容易收获成功。其实,不止是在观察领域,“有备而来”几乎是一条放之四海而皆准的法则,当这种理念放到学习中,就是课前的预习活动。课前预习既是一种良好的学习习惯,也是一种科学的学习方法,它将学生的课堂学习过程进行有效的延伸,是学习活动的起始环节。这种预备性学习要求学生在教师 Pasteur, a famous French microbiologist, once said: “In the field of observation, opportunities only favor the prepared mind.” This sentence tells us that there is sufficient mental preparation, knowledge reserve and ability savings People more easily harvest success. In fact, not only in the field of observation, “preparedness ” is almost a universal law, when this concept into learning, is the pre-class preview activities. Pre-class preview is not only a good learning habit, but also a scientific learning method, which effectively extends the students’ classroom learning process and is the starting point of learning activities. This preparatory study requires students to be teachers