由于小学生年龄小,抽象能力低,空间观念弱,接受几何知识感到困难。因此教学时,应根据学生的认识规律和几何概念的特点,在利用直观图形、模型,形象演示和实际操作的基础上,引导学生积极观察思考,发现图形的特征,再通过比较的方法,区分本质特征和非本质特征,掌握其知识的内在联系。 Due to their young age, low abstract abilities and weak spatial perception, it is difficult for them to accept the knowledge of geometry. Therefore, teaching should be based on students' understanding of the law and the concept of geometric features, based on the use of intuitive graphics, models, image presentation and practical operation, based on the guidance of students to actively observe and find the characteristics of the graphics, and then through the comparison method to distinguish Essential characteristics and non-essential characteristics, grasp the internal relations of their knowledge.