孩子们的脑袋里常常会冒出许许多多的奇思妙想,课堂上常会闪烁出求知与创新的火花。作为教师,应该精心呵护它,不要以为它与本节课的学习内容无关而搪塞了事,如果你能给学生一片自由探讨的天地,也许你将收到意想不到的效果…… Children's heads often give rise to many whimsy, sparks of knowledge and innovation often flash in the classroom. As a teacher, you should take good care of it, do not think it is something that has nothing to do with the content of this lesson. If you can give students a free world, maybe you will receive unexpected results ...