【案例背景】本单元内容是在第一学段学习了用前后、左右、上下等表示物体位置和东、西、南、北等八个方向以及认识简单的路线图等知识的基础上进行学习的,是第一学段“方向与位置”内容的延续和发展,也是第三学段进一步学习相关知识的基础。这部分内容对学生认识自己的生活环境、发展空间观念具有重要作用。用数对确定位置的教学,一个重要价值在于引导 【Case Background】 The contents of this module are based on the knowledge of the first semester that the knowledge of the object position and the east, west, south and north directions and the knowledge of the simple road map are learned before and after, left and right, up and down, etc. Is the continuation and development of the first section “Orientation and Position”, which is also the basis for further studying related knowledge in the third section. This part of the content of the students know their own living environment, the concept of space plays an important role. One of the important values ​​in teaching to determine the position with numbers is to guide