1背景随着新课程标准的实施,学生的学习方式在逐步地发生改变.教师满堂讲解、学生被动接受的课堂学习方式已开始向学生主动参与、积极探究过渡.但这种改变也面临着很多困惑.在实际的教学活动中,有不少教师能够设计出较为精彩的问题情境,可是在课堂上让学生活动后的教学效果却不尽如人意:对老师提出的各种问题,学生反应冷淡成为常态,学生的活动似乎只能限于回答“是不是”或“对不对”这样的问 1 Background With the implementation of the new curriculum standards, students ’learning styles are changing step by step. Teachers explain the whole room and students’ passive ways of classroom learning have begun to actively participate in the students and actively explore the transition. However, such changes are also faced with many Confusion.In the actual teaching activities, many teachers can design a more wonderful problem situations, but in the classroom so that the teaching activities of students after the activity is not satisfactory: on the various issues raised by the teacher, the students reacted coldly As normal, student activity seems limited to answering questions such as “yes or no” or “right”