《三角形的认识》是学生在初步认识三角形和角的基础上进行的学习,本节课的教学重点是让学生掌握三角形的基本特征和理解三角形中任意两边之和大于第三边的特性,并能够解决一些实际问题。为了能够让学生用好教学资源,培养学习习惯,全面有效地提升思维,我在教学中做了一些探索,下面就课堂教学中的几个片段说说自己的体会。 The “triangle of knowledge” is a student's learning based on the initial understanding of triangles and corners. The teaching of this lesson focuses on getting students to grasp the basic characteristics of a triangle and understanding that the sum of any two sides in a triangle is greater than the third, and Can solve some practical problems. In order to enable students to make good use of teaching resources, develop learning habits, improve thinking in an effective manner, I made some exploration in teaching, the following paragraphs on classroom teaching to talk about their own experience.