一、教材分析1.本节内容在教材中的地位和作用 :“海陆的变迁”是第二章的重要组成部分 ,是地球面貌形成的原因。地球自诞生以来 ,风云变幻 ,历经沧桑 ,处于永恒的变化之中。今天海陆的分布及千姿百态的地表形态只是地球发展史中的一幕。通过学习本节海陆的变迁等实例 ,初步认? I. Analysis of Teaching Materials 1. The status and role of the content of this section in the teaching materials: “The changes in the land and sea” are an important part of the second chapter, which is the reason for the appearance of the earth. Since the birth of the Earth, the situation has changed and it has undergone vicissitudes of life. It is in constant change. The distribution of land and sea today and the varied forms of the earth’s surface are just the scenes in the history of earth development. By learning examples of changes in the sea and land in this section, we will initially recognise it.