刚开始讲授人教版数学选修2～3中的第三章第一节时遇到了很大的困难,因为其中课本上的推导线性回归方程的截距和斜率的方法步骤比较复杂,花了很多时间才理解了其全部过程。想如果将其直接传授给学生,学生感觉一定会很吃力,教学效率可能不高。于是花大苦工夫寻找一种比课本更简单和更容易使学生接受的推导方法。功夫不负有心人,通过自己的辛勤努力终于找到了一种好的方法,下面就和大家来共同分享这种方法。 At the beginning of teaching PEP mathematics electives 2 ~ 3 in the first three chapters encountered a lot of difficulties, because the textbook which deduces the intercept and slope of the linear regression equation method steps are more complex and spent a lot Time to understand the whole process. If you want to pass it on directly to students, students feel very hard and inefficient in teaching. So painstakingly looking for a simpler than the textbook and easier to make students accept the derivation. Hard work pays off, through their own hard work finally found a good way to share with everyone the following method.