Jim Pauley,
There are many, many course materials. You can piece together
your own or buy a package of all. As to there sources it would depend on
which textbooks or materials you were talking about. There are so many
books and sets of curriculum out there. To keep things positive, my
advice would be if your child in having problems drop it for a while and
come back with a fresh start and possibly a new approach.
Hope I helped,
Vanessa