For Bible we are using The Greenleaf Guide to Old Testament History. We are really learning a lot by using this book and our Bibles.
Another very interesting 'discovery' was that each of these men died before the flood. In fact, Methusaleh died the same year as the flood. This is important because, of course, all of those who were still alive were NOT following God and perished in the flood.
Anyway, I'm amazed at how much we learned by doing this one 'exercise.' And, Alex had a wonderful time doing this study, too.