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结晶是初中化学混合物分离与提纯的两种基本方法之一,在传统的教学中教师过多地关注了结晶操作的规范和训练,却忽略了学生对结晶原理主动学习能力的培养。在新版教材使用中,笔者通过对生活生产经验的重现以及对学科知识内涵的挖掘,在教学中进行了创新尝试。一、教学内容沪教版九年级化学(2012版)下册第6章第3节物质的溶解性:“三、结晶”。二、教学目标1.知识与技能。初步学会使用结晶的方法对混
Crystallization is one of the two basic methods for separation and purification of junior chemical compounds. In the traditional teaching, teachers pay too much attention to the norms and training of crystallization operations, but ignore the students’ training in the active learning ability of crystallization principle. In the use of the new textbook, the author attempts to make innovations in teaching through the reproduction of the experience of life production and the excavation of the connotation of the subject knowledge. First, the teaching content Shanghai Jiuhua Chemistry (2012 edition) Volume 6 Chapter 3 Solubility of substances: “Three, crystal ”. Second, teaching objectives 1 knowledge and skills. Preliminary learn to use crystallization method of mixing