四月中旬,笔者在无锡听了特级教师张洪鸣老师执教的一节科学课《乒乓球又鼓起来了》。张老师引导学生通过动手探究、反复探讨,得出正确的结论。此时,我们都以为本课己完满结束了,但张老师又抛出一句“学完这一课,同学们还有什么不明白的问题吗?”让学生继续提出新的问题。教室 In mid-April, the author listened to a science lesson “Table Tennis Balls Sharpened”, which was taught in Wuxi by a teacher Zhang Hongming. Teacher Zhang guide students through hands-on exploration, repeated discussions, come to the correct conclusion. At this point, we all thought this lesson was over. However, Teacher Zhang again said, “Do you still have any questions that you can not understand after you finish this lesson?” Let students continue to ask new questions. classroom