一、教学设计上课开始,大屏幕显示现实世界中各种动态的视频.如,汽车在马路上行驶,水中的圆形涟漪慢慢地扩大,卫星在太空中遨游,学生测量身高的变化等.师:大千世界,万物皆变.如果我们从变的视角去观察现实世界中的各种现象,那么,对于以上视频,你所关注的是哪些变化?这些变化的事物之间有没有内在的关联?生1:有联系,路程等于速度乘以时间.时间在变化时,路程也随着变化.生2:汽车行驶的路程随着时间的变化而 First, the teaching design The beginning of the class, the big screen shows a variety of dynamic video in the real world.For example, the car driving on the road, the water ripples slowly expanded, satellites in space travel, students measure height changes. Teacher: In a world where everything changes, if we look at the various phenomena in the real world from a changing perspective, what are your concerns about the above videos and are there any intrinsic relationships between these changed things? Health 1: There is a link, the distance is equal to the speed multiplied by the time, the time is changing, the distance also changes. 生 2: The distance traveled by the vehicle changes with time