This is a good method to take responsibility in homework, or is a reminder to do it.
This is good method to know easily who didn't do it, so the student will be aware of his/her grade.
This method is important to apply in the studies, because shows the attitude and engagement of the student in their homework.
This method is actually useful to know who did the homework. If someone didn't do it, we just can remind the student to do it.