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笔者在讲授人教版八年级上册“与三角形有关的角”时,就具体的教学处理有些许思考,进行了两次教学设计,在此整理成文与同仁交流。一、课题内容简析三角形是常见的一类几何图形,八年级上册第11章“三角形”介绍了三角形的一些基本概念和性质,如:三角形的分类,边、高、中线,角平分线的基本概念和性质,三角形的内角和、外角和性质等。三角形的内角、外角、角平分线等内容,学习容易,但作答方法选择难。许多学生在处
When I was teaching the eighth grade of the PEP, I had some thinking about the specific teaching process and conducted two instructional designings, where I organized the writing and exchange of my colleagues. First, the contents of the brief analysis Triangle is a common type of geometry, the eighth grade on the eleventh chapter “Triangle ” introduces some of the basic concepts and properties of the triangle, such as: triangle classification, edge, height, midline, angle bisector The basic concept and nature of the line, the internal angle and the triangle, the outer corner and nature. Triangle angle, angle, angle bisector and other content, easy to learn, but the answer is difficult to choose. Many students are there