教师在课堂上提出一系列问题,选择不同层次的学生回答,是有其目的性的。对不同层次的学生,设题的形式、涉及的内容、答题的要求应有所区别,这样才符合因材施教的原则。教师设计一道题,既要考虑教材的基本要求和结构体系,又要考虑每一道题的答题对象。答题对象选择得恰当,不仅符合因材施教的教育原则,而且还能起到触一点而牵动全面 The teacher puts forward a series of questions in class and chooses different levels of students to answer. It is purposeful. For students of different levels, the form of the questions, the content involved, and the answer to the questions should be different, so as to meet the principle of teaching students in accordance with their aptitude. Teachers design a question, it is necessary to consider the basic requirements and structure of the teaching materials, but also to consider the subject of each question. Appropriate choice of answer objects not only conforms to the educational principles of teaching students in accordance with their aptitude, but they also have the ability to touch one point and affect the overall situation.