“早改革早收益,晚改革晚收益,不改革不收益。”现在许多学校都在搞教学改革,这肯定是一种趋势,同时也是让大家受益的。随着新课程的改革,教学改革的基本方向为走向自主合作探究的学习,将以往的以“教师为中心,讲授为中心”变为以“学生为中心,学习为中心”的学习模式。在课堂中老师的角色改变了,那么我们怎么样才能获得有效的教学效果呢?课前的教学设计在其中起到的作用必不可少。把学生的思维充分调动起来,引导学生逐步逼近知识的核心概念、 Early recovery of early reform, late reform late gains, no reform does not benefit. “Now many schools are engaged in teaching reform, which is certainly a trend, but also for everyone to benefit. With the reform of the new curriculum, the basic direction of the teaching reform is to learn to explore for independent cooperation. We will change from ”teachers as the center, teaching as the center“ to ”students as the center and study as the center" in the past Learning mode. In the classroom the teacher’s role has changed, so how can we get effective teaching effectiveness? Pre-class instructional design plays an essential role in it. To fully mobilize the students’ thinking and guide students to gradually approach the core concepts of knowledge,