让学生有话可话,能放飞自己的想像;收的过程应是自然圆润,不落痕迹的,在学生不知不觉中进行,“明修栈道,暗度陈仓”;设计问题的坡度,化难为易;适度的提问应能调动起来大多数同学的思维,使他们的思维出现“临界状态”;要确有探讨的价值,要宜少不宜多,宜精不宜滥。 Let the students have something to say, can fly their own imagination; closing process should be natural and mellow, does not fall traces of students unconsciously, “clear path along the cliff, darkness,” design slope, Difficult for the easy; moderate questions should be able to mobilize the majority of students thinking so that their thinking appear “critical state ”; to have the value of exploration, should be less should not be more appropriate should not abuse.