在前年的一次中青年教师示范课上,我曾经教授过七年级下册——《三角形的内角和》这节课,课堂上采用了大量精美的多媒体动态演示,让在场的老师和学生目不暇接,高潮迭起,气氛热烈,看似一节成功的示范课。但在课后总觉得还欠缺些什么,特别是在处理79页的例题时,只让学生用了两种方法便草草收场, In a demonstration class for young and middle-aged teachers of the previous year, I once taught the seventh grade, “Inner Corner of the Triangle,” and this class used a large number of exquisite multimedia dynamic demonstrations in the classroom to dazzle the teachers and students present. Climax after another, warm atmosphere, it seems a successful demonstration class. However, I still feel I still lack something after class. Especially when I deal with the 79-page case study, I only let the students use the two methods to stop it.