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近几年来,我们通过调查研究,找到初三学生在学习化学中存在的几个突出问题:化学用语不熟练,计算能力差,基本实验操作技能掌握不好,文字叙述混乱等。为了共同探讨提高初中化学教学质量问题,谈谈我的几点不成熟的看法。一、指导学生正确地理解和掌握化学概念是非常重要的。我们如注意研究化学概念教学中的一些规律,有助于提高教学效果。从感性认识引入概念。化学概念来自于实践。对于初中学生,要认识事物,形成概念,可从学生已有的感性知识开始。例如,讲“化学变化”这个概念时,可以列举早已为学生们所熟悉的自然界或日常生活里物质运动后变成其它物质的现象得出定义,明确其特征等。又
In recent years, through investigation and research, we have found several outstanding problems in junior high school students in learning chemistry: unskillful use of chemical terms, poor calculation skills, poor mastery of basic experimental operating skills, and confusion in written narratives. In order to jointly discuss the issue of improving the teaching quality of junior high school chemistry, I will talk about some of my immature views. First, it is very important to guide students to correctly understand and master the concept of chemistry. We pay attention to the study of some laws in the teaching of chemistry concepts and help to improve teaching effectiveness. Introduce concepts from perceptual knowledge. The concept of chemistry comes from practice. For junior high school students, understanding things and forming concepts can start with the students’ existing emotional knowledge. For example, when we say the concept of “chemical change,” we can enumerate definitions of the phenomenon that students have become familiar with in the natural world or after the material movements in everyday life become other substances, and define their characteristics. also