古人云:“学起于思,思源于疑”。思维过程就是从问题情境中发现问题、解决问题的过程,通过创设问题情境让学生在情境中思考、探索、合作,养成主动学习的习惯,而不是被动地接受知识,从而激发学生的求知热情,促进学生有效学习。问题情境的创设不仅在于提出问题,更重要的是根据学生现有认知水平设置新问题,使之与学生原有的知识经验产生激烈的问题情境,从而使学 The ancients said: “Learn from thinking, thinking from doubt”. Thinking process is the process of finding and solving problems from the situation of the problem. By creating the problem context, students can think, explore and cooperate in the situation to develop the habit of active learning instead of passively accepting the knowledge so as to stimulate their enthusiasm for seeking knowledge. , To promote effective learning of students. The establishment of the problem situation not only lies in asking questions, but more importantly, setting new problems according to the students ’present level of cognition and making them have fierce problem situations with the students’ original knowledge experience,