有一次,我要上一节校级的科学学科公开课。由于要做实验,我事先让每个学生准备好吸管、矿泉水瓶、橡皮筋、纸杯。器材准备好后,都放在我这,由我保管。但有些学生迟迟没有交器材,我催了好几次,才陆陆续续有人补交器材。后来,我发现纸杯和吸管不够用。我就打算让同桌的两个学生共用。为了在公开课上起到好效果,我先在别的班试讲了一堂课,结果同桌的两个人在做实验时抢器材,互不相让,搞 Once, I would like to go to an open class of scientific subjects at a school level. Because of the experiment, I had each student prepare a straw, mineral water bottle, rubber band, paper cup in advance. Equipment ready, all on me, by my custody. However, some students delayed delivery of equipment, and I urged several times before they were made up. Later, I found that paper cups and straws were not enough. I plan to share the same two students at the same table. In order to play a good effect in the open class, I first talked about a class in other classes, the results of two people at the same table in the experiment to grab the equipment, each other, engage