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一节课中,教师既要为实现教学目标设计合适的问题,还要帮助学生解决这些问题。问题设计得过难,学生苦思冥想后怎么也够不着,而且挤占太多的课堂时间,不利于教学任务的完成;问题设计的过易,学生不假思索便能得出答案,则不利于学生思维的培养和对新授知识深层次的理解;问题设计得过泛,学生的思维便缺乏针对性和目的性,半天得不出实现教学目标的结论;问题设计得太窄,学生的思维便受到限制,随之便抹杀了他们思维的创造性和多样性。
In a class, teachers should not only design appropriate problems to achieve the teaching objectives, but also help students to solve these problems. The problem is too difficult to design, students think after meditation is not enough, but also squeeze too much time in the classroom is not conducive to the completion of teaching tasks; easy to design problems, students can answer without hesitation, is not conducive to the cultivation of student thinking And the new understanding of the deep understanding of the grant of knowledge; problems designed too broad, the students will lack of pertinence and purpose of thinking, half a day can not achieve the teaching objectives of the conclusion; the problem is too narrow, students’ thinking will be limited, The creativity and diversity of their thinking is obliterated.