所谓“做一做”,就是引导学生利用硬纸、木条、铁丝等材料,制作简易的几何模型,或把课本中的知识运用于生活实际。它符合教学原则中的直观性原则、启发性原则和理论联系实际的原则。因此,在平面几何教学中,要充分利用好课本中“做一做”练习,并根据教材内容恰当地设计一些“做一做”,对激发学生的学习兴趣,培养学生的逻辑思维能力和空间观念,对全面提高学生的素质是有好处的。 The so-called “doing a job” is to guide students to use hard paper, wood, iron wire and other materials to make a simple geometric model, or to apply the knowledge in textbooks to real life. It conforms to the principles of intuition, inspiration, and the principle of combining theory with practice in teaching principles. Therefore, in the teaching of plane geometry, we should make full use of the “doing one thing” exercise in textbooks and designing some “doing one thing” according to the content of textbooks. This will stimulate students’ interest in learning and cultivate their logical thinking ability and space. Concepts are beneficial to the overall improvement of students’ quality.