在一次同课异构的教学研讨活动中,几位老师上的都是北师大版教材四年级上册第二单元“线与角”中的“平移与平行”一课。创设的情境大同小异,让学生对平行有了一定的感性认识之后,几位老师进入了“画平行线”这个环节。不同老师各不相同的处理方式,引发了我的思考。甲老师的处理:师:虽然我们认识了平行线,但是想把它画下来可不是一件容易的事。不过没有关系,有老师在,你们就不用怕了。先看看老师是怎样画 In a class heterogeneous teaching and research activities, a few teachers are on the fourth unit of Beijing Normal University textbook on the second unit “line and angle ” in “translation and parallel ” class. Created the same situation, so that students have some parallel perception of perceptual, several teachers entered the “draw parallel lines ” this link. Different teachers deal with different ways, triggering my thinking. Teacher A’s treatment: Teacher: Although we know the parallel lines, but it is not an easy task to draw it down. But it does not matter, there are teachers, you do not have to be afraid. First look at the teacher is how to draw