If you are looking for a literature-based unit study approach for your elementary aged children, Beyond Five In A Row is a great curriculum. Using quality chapter books as the literature, Beyond Five in a Row derives lessons from the stories. The 3 volume series contains secular books and lessons (though the books have been chosen with a Christian worldview) with the 4th volume being a Christian supplement resource. Each volume features two fiction and two nonfiction books. Lessons are derived from the chapter’s content in a unit study approach. This curriculum is very well priced, and since you can borrow the books from the library, you can keep your costs very low. There are additional resources at the back of the curriculum for the convenience of the parent, but additional materials are suggested to supplement the lessons. This curriculum follows Five in a Row (FIAR).