I been home schooling all my kids at all age, and it is the best you can do for your kids!
It doesn't matter what age. If you can spend a little money , get the Calvert school curriculum it is really great and affordable , it comes with a very nice teacher manual it will help you at the beginning.
After a while you can even put your own curriculum together . Look it up http://homeschool.calvertschool.org/