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一、教材分析“三角形全等的判定”是华师版教科书八年级上册第十三章第二节的内容,共分六课时,它是在学生学习了三角形的基本元素和性质、全等图形特征的基础上,进一步研究三角形全等的条件和特征,它是证明线段相等、角相等的重要方法,是今后进一步研究其他图形的基础.本节课是三角形全等判定的第二课时,学好了将为下节课三角形全等的判定打下坚实的基础:同时也为今后探索直角三角形全等的条件以及三角形相似的条件提供很好的模式和方法.因此,本节课的知识具有承前启后的作用.
First, the textbook analysis “triangle congruent judgment ” is the content of the eighth edition of Chapter VIII of the eighth edition of the textbooks, divided into six chapters, it is the students learn the basic elements and nature of the triangle, Further study on the conditions and features of triangle congruent, which is an important method to prove that the line segments are equal and the angles are equal, is the basis for further study of other graphics in the future.This lesson is the second class of the triangle congruent judgment, Learning well will lay a solid foundation for the determination of the triangle congruent class in the next lesson and also provide a good model and method for exploring the conditions for congruent right triangles and the similar conditions for the triangle in the future classes. Role.