It's interesting that you say that because when I first looked at it, I thought there were just a lot of worksheets, too.  I know DS needs visual interest.  That's why I initially intended to use it just for the extras - art, history and music.  I'm not sure what convinced me to sign up for math and LA, too.  I guess I read a lot of positive comments about all the courses K-5, and I need help fitting everything in.  DS really wanted to do it, too, including science (which I thought we'd continue to do on our own).  The advantage of being independent is that I can skip the busy work and the review at the beginning of each new grade.  It's also nice for me b/c they have a lot of support available from other parents.  Basically, I'm still scrambling, trying to figure out what will work for us.  I'll post again, once we've had some experience with it.