化学教学设计是教师依据化学教学大纲,按照化学教材内容,根据学生的具体实际和学校的现有设施,确定教学所要达到的目的并决定自己的教学行为,写出具体教案,也就是通常说的备课。由于教师对教情、学情的了解不可能完全符合实际,又由于客观实际在不断变化,因此,在进行教学设计时,肯定会有许多未及考虑的因素,即不确定因素。正是由于不确定因素的存在,往往使我们的课堂设计和课堂教学实践相悖,从而达不到教学设计所希望达到的目的。 Chemistry teaching design is based on the chemistry curriculum, according to the content of chemistry textbooks, according to the specific conditions of students and the existing facilities of the school, to determine the purpose of teaching to achieve and determine their own teaching behavior, write a concrete lesson plan, which is usually said Prepare lessons. Since teachers’ understanding of education and learning cannot be completely consistent with reality, and because of the constant changes in objective reality, there are certainly many factors that cannot be taken into consideration in the design of teaching, that is, uncertainties. It is because of the existence of uncertain factors that often make our classroom design and classroom teaching practice inconsistent, so as to fail to achieve the purpose of teaching design.