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化学通报第十五卷第一、二期刊有北京市中等化学教师教研会所写对东北版初高中化学教科书的讨论(一)和(二)以及第三期符绶玺同志,第六期培青同志的意见,这对于我们中等化学教师在提高教学质量上帮助很大,希望今后能经常刊登,以不断地改进中等化学的教学我仅参加教育工作半年,对讲授初高中东北版的化学有下列几点不够成熟的意见,提出来供大家参考,并希望能多加批评。 (一)在讲到第二章第二节水的净化法和纯水的物理性质时,因前面第一章在物质的精制中即以水为例,提到沉淀法,过滤法和蒸馏法三种方法,在这里可归纳起来重新提出水的精制,共有沉淀,过滤,蒸馏,煮沸和消毒,五种方法,使同学对水的处理有较完整的概念。在第二章第五节水的组成中,证明水是氢
Chemistry Bulletin Vol. 15, No. 1 and No. 2 Beijing Secondary Chemistry Teachers Teaching and Research Institute to write the Northeast High School Chemistry Textbook Discussion (a) and (b) and the third period comrade Shou Shuxi, sixth training Green comrades opinion, which for our secondary chemistry teachers to help improve the quality of teaching great hope that in the future often published in order to continuously improve the teaching of secondary chemistry, I only participate in education for six months, to teach junior high school in Northeast Chemistry The following points are not mature enough opinions, put forward for your reference, and hope to be more criticism. (A) When referring to Chapter II, Section II, Water Purification and Physical Properties of Pure Water, the first chapter in the purification of matter, ie water, refers to precipitation, filtration and distillation Three methods, here can be summed up to re-propose the water purification, a total of precipitation, filtration, distillation, boiling and disinfection, five kinds of methods to enable students to deal with water more complete concept. In the composition of chapter V, chapter II, water is proved to be hydrogen