现象反思低年级教材中的“平面图形”或“立体图形”这类知识相对独立,老师们都喜欢把它作为公开课。听这类课的机会自然也就多,一琢磨就发现这些课有个共性:“表演”成份居多,均安排了“分一分、摆一摆、数一数”等活动,很热闹。等活动结束了,静下心来想一想:活动仅仅是活动, Reflections on the phenomenon of the lower grades of textbooks, “graphic graphics” or “three-dimensional graphics,” such knowledge is relatively independent, teachers like it as an open class. Naturally, there are many opportunities to listen to such lessons. When you think about them, you will find that these lessons have something in common: “performance” is mostly composed of activities such as “sharing points, posing, and counting” and is very lively. When the activity is over, stop and think about it: the activity is just an activity,