教学大纲说明部份指出,“中学的数学是由算术,代数,几何及三角所组成的一个有系统的课程”,这说明数学各科之间是有相互关联的。学生在初一阶段,通过算术课中简单面积和体积的计算,对几何图形的概念有了初步的认识,因此,我们在绪论一章,开始讲几何图形的时候,就可以从初一算术教本中所有的一些几何图形,或者从课堂内客观存在的物体来说明,这就容易使学生接 The section of the syllabus indicates that “mathematics in middle school is a systematic course composed of arithmetic, algebra, geometry, and trigonometry”. This shows that mathematics departments are related to each other. In the first stage of the mathematics, the students had a preliminary understanding of the concept of geometric figures through the calculation of simple areas and volumes in the arithmetic class. Therefore, when we began to talk about geometric figures in the introduction chapter, we can use the mathematics textbook from the first grade. All of the geometric shapes in the book, or objects that are objectively present in the classroom, make it easy for students to pick up