一、问题的提出根据近几年全国高等学校统一招生化学试卷分析和教师反映,学生的化学知识有以下缺陷: 有的学生,“双基”学得不错,但缺乏综合提高的能力; 有的学生说:“单问这个概念,还会答,一综合起来就糊涂”; 不少学生,大量地解难题,陷入“题悔”,做了一题,只会一题,过后又把它忘了; 相当普遍的学生,只死肯知识不去解题,或只死套公式、用死方法去解答简单的题; 多数学生,对实验现象模糊,叙述实验现象语无伦次,缺乏最基本的表达能力;……出现这些现象的原因很多,没有认清解题 First, the problem is raised According to the analysis of chemical examination papers and teachers’ responses from the unified enrollment of higher education institutions in recent years, students’ chemical knowledge has the following defects: Some students have good “double base” skills, but lack the ability to improve comprehensively; The student said: “Single questioning of this concept will answer them, and they will be confused when they are combined.” Many students solve puzzles in large numbers and fall into the “remorse” issue. When they do a question, they only have one question and forget about it later. The students who are quite common only use knowledge to solve the problem, or die only in formulas, and use dead methods to answer simple questions. Most students confuse experimental phenomena, narrative experimental phenomena are incoherent, and lack the most basic expression skills. ;...... There are many reasons for these phenomena, but they do not understand the problem