近日,听了一位同行的一节自然课,讲的是《声音的产生》。教者为了充分发挥学生的主动性,大胆放手,让学生自主去探究。教室里一阵锣鼓声后,汇报了实验结果,教师也因势诱导学生提出了假说:声音是由物体振动产生的。然后教师又引导学生设计实验来证明这一假说。眼看形势一片大好,可在学生填写书中空白时,一个男孩子举手起来大声质疑:“我认为书中的结论不 Recently, I listened to a fellow natural class, talking about “the sound generation.” In order to bring students' initiative into full play, the devotees should boldly let go and allow students to explore autonomously. After the gongs and drums were heard in the classroom, the experimental results were reported. Teachers also induced the students to make the hypothesis that the sound was produced by the vibration of the object. Then teachers also guide students to design experiments to prove this hypothesis. Seeing the situation is excellent, students fill in the blank book, a boy raised his hand and loudly questioned: "I think the conclusion in the book is not