一、一个值得研究的问题在《有趣的石头》一课中,让学生做“石灰岩滴上盐酸会发现冒泡现象”的实验。学生提出了这样一个问题:“有一块石头,在表面滴上盐酸不冒泡,而把它敲开后在断面上滴盐酸却起泡了,这是怎么回事?”突如其来的问题把老师问住了,老师只说:“你的发现很独特,有 First, a study worth studying In the lesson of “Fun Stones”, students were asked to experiment with “bubbling of limestone to hydrochloric acid”. The student raised the question: “There’s a stone that drops hydrochloric acid on the surface without bubbling, and when it is knocked open it drops hydrochloric acid and bubbles, what’s going on?” Sudden problems asked the teacher Live, the teacher only said: "Your discovery is unique, there