《义务教育科学课程标准》指出:“以探究活动为核心的科学教学过程,不再是教师照本宣读教科书和刻板地执行教案的过程。教学要在一定的情景中展开,学生会提出许多教师意想不到的问题,教学过程中也会出现许多难以预料的情况。”因此,教师 The standard of science curriculum of compulsory education states: “The process of science teaching centered on inquiry activities is no longer the process of teachers reading textbooks and carrying out teaching plans in a rigid manner. Teaching should be carried out in certain scenarios and students will make many teachers Unpredictable problems, there are many unpredictable situations in the teaching process. ”" Therefore, teachers