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实验的改进是值得探索的课题。有些实验会造成环境的污染,有的实验存在一定的安全隐患,因此对初中化学部分实验予以改进是非常必要的。为达到更好的教学效果,初中化学实验的教学改进,应遵守如下原则:1.科学性原则。即要做到实验原理准确无误,实验方案设计科学,实验装置设计合理,实验操作要符合要求。该原则是首要的,是改进实验成功的主要标准。2.直观性原则。即实验现象明显,可见度高,实验结论的得出要呈直接性。它是改进实验成功
Experimental improvement is worth exploring. Some experiments will cause environmental pollution, and some experiments there are some potential safety problems, so part of the junior high school chemistry to be improved to be very necessary. In order to achieve a better teaching effect, junior high school chemistry experiment teaching improvement, should abide by the following principles: 1. Scientific principle. That is to be accurate experimental principle, experimental program design science, experimental device design is reasonable, the experimental operation to meet the requirements. This principle is paramount and is the main criterion for improving experimental success. 2. Intuitive principles. That is obvious experimental phenomenon, high visibility, experimental conclusion drawn to be direct. It is to improve the experimental success