You should follow any instruction that your teacher gives.
Lexi is in class but is thinking about all the things she can do when she gets home.
Lexi wants to get her work done before going home.
Lexi listens intently and realizes the teacher didn't want some of the problems done.
Lexi rushes through the chapter and was the first to submit the homework.
Lexi's teacher gives her an A for following directions.
Lexi's teacher sees that she didn't pay attention to the assignment and fails her.