最近听了一节高三立体几何课,内容是复习“棱柱”。教师问:“什么叫棱柱?”学生被一一指名作答,“夹在两个平行平面中间的几何体。”“侧棱平行。”“各个面都是平行四边形。”……教师无可奈何,感到实在不能再拖下去了,便改变方式,自己讲了起来.这堂课共复习了十四个概念,三条性质,一个定理,两个公式,接着还讲了两道题,有一定的难度。联想平时所听的复习课,不少都有类似的情况。这样的复习课到底能解决什么问题呢?这么多的内容,平时要上五六节课,学生概念尚且模糊,如今压缩在一节课里复述一遍,这样蜻蜓点水,浮 Recently heard a high school three-dimensional geometry, the content is to review the “prism.” The teacher asks: “What is a prism?” The students were asked one by one to name “the geometry sandwiched between two parallel planes.” “The side ribs are parallel.” “The faces are all parallelograms.” ... Teachers feel helpless and feel real Can not be further dragged down, then change the way, say it yourself.This class a total review of fourteen concepts, three properties, a theorem, two formulas, then also talked about two questions, a certain degree of difficulty. Lenovo usually listen to the review class, many have a similar situation. This review class in the end to solve any problems? So much content, usually on the five or six classes, the concept of the student is still vague, and now compressed in a lesson repeat it, so superficial, floating