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平行关系和垂直关系的判定和性质是立体几何部分的重点和难点,在学完这部分知识后,为了帮助学生更好地应用定理解决平行与垂直的相关问题,我安排了一节习题课,所选例题和习题大都是在各种教辅资料上经常出现的题目。备课时,我认真分析了每道题的解题思路并写出了解答过程,有些题目的辅助线不好想,或者思路有些绕弯,我还设计了引导学生如何思考的问题。不过,在课堂上,有两道题目,学生给出了与我不同的解法,而且
The judgment and nature of the parallel relationship and vertical relationship are the focus and difficulty of the three-dimensional geometry. After learning this part of the knowledge, in order to help students better use the theorem to solve the parallel and vertical related issues, I arranged a class of exercises. The examples and exercises are mostly topics that often appear on various supplementary materials. When I was preparing lessons, I carefully analyzed the problem-solving ideas of each question and wrote the answer process. The auxiliary lines of some questions were not thought well, or the ideas were somewhat curved. I also designed questions that guide students in thinking. However, in the classroom, there are two topics where students give me different solutions, and