在教学工作中我非常重视化学与生物学的联系问题,我企图使学生的化学知识能对有机界发生的现象作出解释,这不仅具有教养意义而具有重大的教育意义。七年级的中学生,学过了化学基本概念之后,开始学习空气与氧。这里一般地只要求学生懂得氧在人类、动物与植物的生活过程中所起的重要作用。至于氮,在七年级只讲到它是空气的组成成分而且占空气的78%。为了使学生知道氮在生物界的作用,我使他们注意到含氮物质(蛋白质)对机体 In teaching, I attach great importance to the connection between chemistry and biology. I try to make students’ chemical knowledge explain the phenomena that occur in the organic world, which not only has the significance of education but also has great educational significance. The seventh grade high school student, after having studied the basic concepts of chemistry, began to learn air and oxygen. This generally requires only students to understand the important role of oxygen in the lives of humans, animals and plants. As for nitrogen, in the seventh grade it is only mentioned that it is a constituent of air and accounts for 78% of the air. In order to make students aware of the role of nitrogen in the biological world, I made them aware of the effects of nitrogenous substances (proteins) on the body