Boring lesson
I hate mathematics. It is the most boring subject I know. There is always too much noise in the classroom. On During this the lesson I usually write some stories or listen to the music. It is not good, I know. My teacher absolutely doesn't care what I do. Everybody in my class does everything besides mathematics.
I expect your teacher cares very much and is very disappointed that no one listens. That's the way I feel about my lessons to Chinese students.