“银镜反映”实验涉及到很多“双基”知识,它既是教材的重点,又是难点。但是按照现行有关资料作银镜反应实验,不仅花的时间长,而且效果不够良好。我们作了一些改进,使整个实验(包括试剂配制)不到五分钟就可制成一个小圆镜:在幻灯机上进行演示,更为生动直观。其作法是: “Silver mirror reflection” experiment involves a lot of “double base” knowledge, which is not only the focus of teaching materials, but also difficult. However, in accordance with the current relevant information for silver mirror reaction experiment, not only takes a long time, and the effect is not good enough. We made some improvements so that the entire experiment (including reagent preparation) can be made into a small round in less than five minutes: a demonstration on a slide projector is more vivid and intuitive. Its approach is: