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(一) 在党的教导与指引下;通过教育方针的学习与劳动实践,在思想上有点滴体会,在教学上亦有点滴改变。本文拟介绍初二几何“角的量法”与“轴对称图形”二单元的教学情况,并祈同志们予以批评指教。Ⅰ.角的量法的教学(二课时): 开头课就向学生提出下列二类问题: ①角既然有大小;怎样表示大小不同的角呢?可否测量?用什么仪器? ②党旗、国旗、团队旗上的五角星你会画吗?怎样画?又如:钟的表面,齿轮,六角螺丝帽(展示实物),怎样画? 然后介绍量角器的使用,再提出,为什么可以这样测量角呢?从而引入圆心角概念及其与所对的弧的相
(1) Under the guidance and guidance of the Party; through the study of education policy and labor practices, there has been a slight drop in ideology and a slight change in teaching. This article is intended to introduce the teaching situation of the second grade geometry “Angle Method” and “Axis Symmetry”, and pray for comrades to criticize and teach. I. Teaching of the Angular Method (second class): The following two types of questions were asked at the beginning of the lesson: 1. Since there is a size, how does one indicate a different size of an angle? Can it be measured? What instrument is used? 2 Party flags, flags, Do you draw the five-pointed star on the team’s flag? How do you paint it? Another example: the surface of the clock, the gear, the hexagonal screw cap (showing the physical object), how to draw it? Then introduce the use of the protractor, and then propose why you can measure the angle like this? This leads to the concept of a central angle and its relationship with the arc