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在物理教学大纲和高考的“考试说明”中,实验部分有这样的要求:“要求知道有效数字的概念,会用有效数字表达直接测量的结果”,有关有效数字的知识及如何正确地读出仪器的测量结果,在现有的高中教材中,并没有专门的篇章予以系统的叙述,教师们在教学中没有教材作依据,只能参考各种参考书,但是,对同一个问题,不同的参考书的说法不一,给教学带来了混乱.
In the physics syllabus and the “Exam Description” of the college entrance examination, the experimental part has such requirements: “request to know the concept of a valid figure, express the result of direct measurement with a valid figure”, knowledge of valid figures and how to read out correctly The measurement results of the instrument do not have a specific chapter in the existing high school textbooks to give a systematic account. Teachers do not have textbooks as a basis for teaching. They can only refer to various reference books, but they are different for the same question. The reference books were mixed and brought confusion to the teaching.