论文部分内容阅读
东北版初中化学教材与过去旧教材有显著的不同,只就基本定律而言,它有着简明的科学系统。旧的教材关於“物质不灭定律”的说明,只介绍一些固体或液体的化学变化前後重量不变的实验,有些则仅略述关於燃烧腊烛的实验,但均语焉不详,有些甚至连实验也不做只简单地叙述一下定律的条文罢了。因此,便造成学生的教条学习死记定律的不合理现象,对定律的真正意义了解得不彻底,遇到具体的事例便解决不了。而这本书对基本定律的说明与实验,只要是用过这部书的教师都会感到它的优
Northeastern version of junior high school chemistry textbooks and past old textbooks are significantly different, only the basic law, it has a concise scientific system. The old textbook on “the law of material immortality” describes only some experiments on the weight of solid or liquid before and after chemical changes, while others only briefly describe the experiment on burning candles, but they are not familiar with it. Some even experiment Do not simply say something about the law. Therefore, the irrationality of the student’s doctrine of learning the law of memorization results in a lack of thorough understanding of the true meaning of the law and the failure to meet concrete examples. The book of the basic laws of the description and experiment, as long as the teacher has used this book will feel its excellent