化学计算可以培养学生的分析、推理、运算能力,它与物质的组成、结构、性质等内容密切联系,因此化学计算贯穿整个高中的化学学习。在考试中一定会有化学计算这部分内容出现,但化学计算对于学生来讲是难点。因此,教会学生抓住化学计算中存在的守恒关系,巧用守恒法解化学计算,对于帮助学生解决这一困难非常有意义。以下是我在教学中总结如 Chemistry calculation can train students’ ability of analysis, reasoning and calculation, which is closely related to the composition, structure and nature of the material. Therefore, the chemical calculation runs through the chemistry learning of the whole high school. In the exam there will be some of this part of the chemical calculation, but the stochastic calculation is difficult for students. Therefore, to teach students to grasp the conservatism in the chemical calculation, the clever use of conservation law to solve the chemical calculation, to help students solve this difficulty is very meaningful. The following is my summary of teaching