绝大多数教师都有教好学生的愿望。但是,只有良好的愿望而没有切实可行的措施,又不在教学过程中,不断地总结经验、改正错误,好的愿望是不能实现的。我在高中一年级物理课讲平均速度:v=(v_0+V_t)/2时,看了不少参考书,引证了极限和图解两种推导方法,“灌”了一堂课后,学生反映不懂。他们说“老 Most teachers have the desire to teach students well. However, only good wishes and practical measures are not available, and it is impossible to continue to sum up experiences and correct mistakes in the teaching process. Good wishes cannot be achieved. When I was speaking about the average speed in my first year of high school physics class: when v=(v_0+V_t)/2, I read a lot of reference books. I cited the two derivation methods of the limit and the diagram. After the “filling” of a class, the students did not respond. understand. They say "old