Homework is a waste of time in only two cases:
- When it is busy work.
- When it is "done" but not understood by the doer.
From
high school through
college, I noticed that
homework helps most visibly for
math classes. This was most apparent to me in
Calculus IV which I had to take twice. The first time I took it, I started off
religiously doing all the
homework assigned, then later
slacked off and was unable to fully catch up before
exams. Because of this, I was only able to understand exam problems hardly and
superficially. The second time I took the class, I did all the homework, and the exams, which used to seem next to impossible for me, were so damn easy.