《角平分线的作法与性质》是笔者依据人教版课标教材执教的一节课。备课时,我们备课组对以下两个问题进行了仔细的讨论。1.要不要学习尺规作角平分线的知识与技能角平分线是生活中常见的图形。公路两旁的指路牌、马路地面上指引车行的标志、等等,都少不了“(?)”这样的符号,要准确而美观地画出这样一个符号, “Angle bisector approach and nature of” is based on the PEP curriculum teaching materials coaching a class. When preparing lessons, our lesson preparation team conducted a careful discussion of the following two questions. 1. Do you want to learn the rule of thumb angle bisector knowledge and skills angle bisector is a common figure in life. Road signs on both sides of the road, the road marking the driving signs on the road, and so on, all ultimately “(?) ” This symbol, to be accurate and beautiful to draw such a symbol,