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很多教师有这样的感受:无论你是多么有经验的老教师,也无论你课前多么精心地备课,多么详细地设计教学过程,在课堂中总有你意想不到的事情发生。对于职中化学学科来说,大量的化学实验的操作,更增加了课堂的不确定因素。辩证唯物主义认为变化是事物发展的常态,在化学课堂中的一些主客观因素,尤其是具体的情景是难以预见的,因而在教学中常会产生许多生成性的问题,即不曾预设的“动
Many teachers have the feeling that no matter how old you are experienced teachers and how carefully you prepare lessons before the class and how detailed the teaching process is, there are always unexpected things in your class. For the vocational chemistry course, the operation of a large number of chemical experiments, but also adds to the uncertainty of the classroom. Dialectical materialism holds that change is the normal development of things. Some of the subjective and objective factors in chemistry class, especially the specific scenarios, are unpredictable. Therefore, there are many generating problems often encountered in teaching, that is, unpredictable ” move