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在数学课堂教学中,我们不仅要让学生了解和掌握课本中的知识,更重要的是让学生在接受知识的过程中感受知识的形成过程,并且经过教师课堂上的引导,培养学生的思维能力,这样才能实现数学教学的高效课堂.下面以“三角形内角和等于180°”这一定理的教学设计为例,与大家交流探讨,共同提高.问题1如何利用所学的几何知识,结合拼接法的操作过程,寻找出证明“三角形内角和等于180°”的思路?
In mathematics classroom teaching, we should not only let students understand and master the knowledge in textbooks, but more importantly let students feel the formation process of knowledge in the process of accepting knowledge, and through the guidance of teachers in class, we can train students’ thinking ability , In order to achieve efficient classroom teaching of mathematics below to “triangle interior angle and equals 180 ” This teaching theory as an example, to exchange and discuss with you to improve. Question 1 how to use the knowledge of geometry, combined with Splicing method of operation, find out to prove “triangle angle and equals 180 ° ” train of thought?