Abeka has dvd courses. You can do 2 ways...one is you send the work to them quarterly and they grade it, the other is to do that yourself. You still have the dvd’s for instruction, those do have to be returned to them. I have friends who use this and love it. If I could afford it I would use it.
Alpha Omega has cd instructional cds....Saxon math also has instructional cds.
http://themathworksheetsite.com/
This is a must. The kids need to be able to do certain things in a certain time frame. Having them do the 5 min drill is a good place to start the older kids so you can see exactly what they need to work on.
I also know some folks that love Math U See but I don’t know if they offer instructional videos/cd’s. As far as I know every curriculum offers teacher books to go along with the student books so instructional help may not be such an issue in the lower grades.
There is a program that i do not remember the name of out of washington state. It emphasizes math and science. The person who put it together was a former UCLA science professor. It has K-12 on one CD and has been very successful from the folks i know that have used it.