论文部分内容阅读
1一个教学实例前不久,参加区教研活动听了一节课,课题是苏教版必修2“平面与平面的位置关系——两平面垂直”(第1课时),我们先看看本节课(40分钟)的基本情况.复习回顾:复习面面平行的判断与性质定理,以及复习了线线角、线面角的定义及范围等知识(用时约4分钟).“二面角”的建构:先呈现两个常见情境——卫星的轨道平面与地球的赤道平面相交的模型、使用电脑时打开显示屏的模型,并由此建构出“二面角”
1 A teaching example Not long ago, attended the district teaching and research activities to listen to a class, the subject is the Supian version compulsory 2 “Plane and Plane Position - Two Plane Vertical ” (Lesson 1), we look at this Review the basic situation of the lesson (40 minutes) Review Review: Review the parallel judgment and nature of the theory, and review the line angle, line angle definition and scope of knowledge (in about 4 minutes). Angle “construction: Two common scenarios are first presented - a model where the orbital plane of the satellite intersects the Earth’s equatorial plane, the model of the display screen that is opened when the computer is used, and the” dihedral "