“平行”是描述两条直线位置关系的一个重要概念,它在几何学中占有十分特殊的地位。引导学生结合生活情境初步了解平行的含义,不仅能为后续的“图形与几何”的学习打下必要的基础,而且有助于他们更加透彻地把握直线的基本特点,更加全面地理解直线之间的位置关系,进而促进空间观念的形成和发展。考虑到学生已经认识了“两条直线相交”以及“两条直线互相垂直”的含义,同时考虑到平行线具有很多十分有趣和重要的性 “Parallel ” is an important concept to describe the relationship between two straight lines. It occupies a very special position in geometry. Guide students to understand the meaning of parallelism based on the situation of life, not only lay the necessary foundation for the follow-up “Graphics and Geometry ” learning, but also help them to grasp the basic characteristics of the line more thoroughly and understand the line more comprehensively The relationship between the location, thereby promoting the formation and development of space concept. Considering that students already know the meaning of “two lines meet ” and “two lines perpendicular to each other ”, taking into account the parallel lines have a lot of very interesting and important