I learn today that making changes aren't bad at all the time. I experienced that in front of my eyes. I have just joined a course. Funny teacher starts to teach us. He just tried to waste the course time . He read all points then foucs on last one to pretend that all points are explained. Despite my classmates got familiar with the way he teach. But some arreangement has been applied to the course such as attendance time, new classmates joined and combine other classes. So our teacher is changed with a serious one. Our new teacher put some red line should be followed. He spends the class from the biggining untile the end. However he goes through all details and make them clear. Participation in calss is a must to pass the course and get high marks. I and my group realize that we are lucky as we get valuable chance to get more frome the course.