论文部分内容阅读
在中学化学教学中,认真培养学生解题能力,是搞好“双基”教学的重要环节,也是发展学生智力的有效途径。因此,不断提高学生的解题能力,是十分重要的。一、搞好化学基础知识的教学,是培养学生解题能力的基础实践证明,要培养学生的解题能力,就必须使学生牢固地掌握化学基础知识。如果学生对于化学基础知识,一知半解,理解不深,掌握不好,就很难有中肯的分析、准确的判断、逻辑的思维和正确的回答。有的学生,常常由于对某一概念、某一原理,某一反应规律,含糊不清,似懂非懂,就会堵塞了思路,造成在判断、推理和计算上的错误。例如,有的学生把书写金属钠跟硝酸铁溶液反应的化学方程式写成:
In chemistry teaching in middle schools, earnestly cultivating students’ problem-solving abilities is an important part of doing a good job of “dual-basic” teaching, and it is also an effective way to develop students’ intelligence. Therefore, it is very important to constantly improve students’ ability to solve problems. First, do a good job in the teaching of basic knowledge of chemistry, is the basic practice of cultivating students’ problem-solving abilities. To cultivate students’ problem-solving abilities, students must be able to firmly grasp the basic knowledge of chemistry. If students have little understanding of basic chemistry, little understanding, and poor understanding, it will be difficult for them to have sound analysis, accurate judgments, logical thinking and correct answers. Some students, often because of a certain concept, a certain principle, a certain reaction law, vague, like non-understanding, will block the thinking, resulting in errors in judgment, reasoning and calculation. For example, some students write chemical equations that describe the reaction between metallic sodium and ferric nitrate: