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一、教材分析1.本节内容的地位和作用溶液是初三学生继空气之后学习的又一类重要的混合物。学生在日常生活和以前的学习中已经接触了许多溶液,对溶液有了一定的了解,但又处于一种“知其然,而不知其所以然”的状态,而在后面两个单元对酸、碱、盐的学习中,绝大多数反应将涉及到溶液。因此,帮助学生在生活经验和学习经验的基础上,集中地学习有关溶液的知识是很有必要的。本节内容具有重要的承上启下的作用。
First, the textbook analysis 1 The status and role of this section The solution is the third grade students after the air to learn another important class of mixture. Students in daily life and previous studies have been exposed to many solutions, have a certain understanding of the solution, but in a “know it, but I do not know why” state, and in the latter two pairs of units Acid, alkali, salt in the study, the vast majority of reactions will involve the solution. Therefore, it is necessary to help students to concentrate on learning about the solution based on their life experience and learning experience. This section has an important bearing on the role.