《风的观测》一课,要求学生知道什么是风向,怎样利用风向标来判定风向。那么“在没有风向标的时候该如何判断风向呢?”这道题我留给同学们课后动脑筋想办法,下节课比一比,看谁找到的方法多。 等到下一堂自然课时,我发现同学们个个脸上洋溢着激动兴奋的笑,看得出大家一定找到了不少 “Wind observation” lesson, requires students to know what is the wind direction, how to use the wind vane to determine the wind direction. So “how to judge the direction of the wind when there is no wind vane?” I left this question to my classmates after school to find a solution. The next lesson is more than one way to see who has found many ways. Wait until the next class of natural class, I found that students are all excited with a smile on his face, we can see that we must find a lot