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在九年级化学第三单元《物质构成的奥秘》的教学中,很多教师觉得难讲,很多学生觉得难学、难理解,归根结底就是教师很难帮助学生建立微观想象力,对于这个问题经过几年的教学工作中的不断探索,总结出主要有一点:那就是使微观看不见、摸不着的粒子宏观化,以此进行微观教学。一、图示法这个方法是最简便的,在教材中也是用这个方法表示,如,这种方法简洁明了,不受学校设备和教师使用新技术的能力限制,是一般课堂教学中常用的方法。
Many teachers find it hard to tell in the teaching of “the mysteries of matter” in the third unit of chemistry of the ninth grade. Many students find it difficult to learn and difficult to understand. In the final analysis, it is very difficult for teachers to help students to establish their micro-imagination. After several years of this problem, The continuous exploration in the teaching work, summed up the main point: that is, the micro-invisible, invisible macro-particles, as micro-teaching. First, the pictorial method This method is the most simple, in the textbook is also used this method that, for example, this method is concise, free from the limitations of school equipment and teachers ability to use new technologies, is commonly used in classroom teaching methods .