定量实验中的误差分析是化学的重要内容之一,分析由于读数产生的误差往往也是考试中的重要考点,但是学生对于读数中的误差分析往往缺乏系统性的理解,造成讲了就会,做了就错的局面。如何让学生从本质上理解读数中的误差分析呢?我们可以从构建量器读数误差分析思维模型的角度进行突破。一、一个原理在读数过程中,涉及三个要点,即眼睛、刻度线和凹液面最低处。不管读数方式正确与否,其原理都是三点形成一条直线。三个点中,眼睛是 The error analysis in quantitative experiment is one of the important contents of chemistry. Analyzing the errors caused by the readings is also an important test point in the test. However, students often lack a systematic understanding of the error analysis in readings. The wrong situation. How to make students understand the essence of the error analysis of reading? We can construct a reading error analysis from the perspective of thinking model to make a breakthrough. First, a principle in the reading process, involves three points, namely, eyes, tick marks and the lowest concave surface. Regardless of whether the reading is correct or not, the principle is to form a straight line at three points. In three spots, the eyes are