在《凸透镜》一课中,同学们通过研究发现:在纸屏上可得到放大或缩小的像,并且都是倒立的,此时,他们的思维更活跃了,“老师,用凸透镜能把物像正过来吗?”平时爱提各种怪问题的一位同学举手发问。“这个问题提得好。”我当即表扬了他这种大胆想象、敢于质疑的科学精神,这实际已涉及到大地望远镜,这是我课前始料不及的。 In the course of “Convex Lens”, the students through research found that they could get the image enlarged or reduced on paper screen, and they were all upside down. At this moment, their thinking was more active. “Teacher, Like being coming? ”Usually love to mention a variety of strange questions raised by a classmate. “This is a very good question.” I immediately praised him for his bold imagination and courage to question the scientific spirit that actually involved the Earth Telescope. This was beyond my expectations.