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在初中植物教材中,讲述了植物进化的证据、历程和原因。我在教学实践中体会到,要使学生建立上述概念和掌握基本知识,采用图示法讲述能收到较好的效果。在这个“植物界进化的路线图”(图1)中,除了反映了植物类群的来龙去脉外,还体现了类群与其生活环境的统一关系以及类群的复杂程度随地质年代的变化关系。利用这张图讲述进化的证据(再配合化石或挂图)、历程、原因和规律,是一种直观的教学手段。
In the junior high school teaching materials, it tells the evidence, history and reasons of plant evolution. I learned in teaching practice, to enable students to establish the above concepts and master the basic knowledge, the use of graphic method to receive better results. In this Roadmap to Phytoplankton Evolution (Fig. 1), in addition to reflecting the context of phytophages, the unity of the taxa with their living environment and the variation of their complexity with the geologic age are also reflected. Use this picture to tell the evolutionary evidence (together with the fossil or flip chart), history, causes and laws, is an intuitive teaching method.