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板块构造学说是出现于六十年代的全球性大地构造学说。它是在大陆漂移说、海底扩张说的基础上发展起来的。运用板块构造学说原理解释环太平洋火山地震带的成因是初中世界地理中太平洋一节的重点。教材内容包括规模宏大的空间和漫长的发展时间,涉及地球表面的多种形态和大洋底部、地球深处,有些事物都是不可能直接观察到的,所以教材的难度较大。利用教材中的插图,充分地发挥学生的想象能力,是攻克这个重点和难点的一种有效方法。我们在分析教材的基础上,按照由现象到原因,由局部到整体,逐步加深的原则,把教材内容设计成若干个彼此联系的小问题,作为引导和启发学生发挥相象能力的线索。
The theory of plate tectonics is a global geotectonics theory that emerged in the 1960s. It is based on the theory of continental drift and the expansion of the seabed. The interpretation of the origin of the volcanic seismic zone in the Pacific Rim using the theory of plate tectonics is the focus of the Middle-Pacific World Geography in the Pacific. The content of the teaching materials includes large-scale space and long development time. It involves various forms of the Earth’s surface, the bottom of the ocean, and the depths of the earth. Some things are impossible to observe directly. Therefore, teaching materials are more difficult. Using the illustrations in the textbooks to give full play to students’ imaginations is an effective way to overcome this important and difficult point. Based on the analysis of teaching materials, we follow the principles of the phenomenon to the cause, from the part to the whole, and gradually deepen the content of the teaching materials into a number of small problems linked to each other, as a guide to guide and inspire students to use their ability to display similar abilities.