I am planning on her science curriculum and the Nature studies- to me they are two seperate things 🙂 Apologia seems to be the way most folks are going, but it never clicked with any of mine. We used Real Science 4 kids and Noeo over the last couple of years. Noeo set her up well for the scientific method and how to write up an experiment plus had lots of lovely books. Next year she is going to a co-op class where they will be using Rainbow science and I will do the Queens NS with her. I think the Parables from Nature is a good one for a boy, there is lots to choose from. It includes the whole text from Parables which was written over a hundred years ago I believe. After each chapter which you can read aloud or have him read, there are several options for projects, research questions, drawing pages etc..For example, after reading about cats and how they purr the lessons are, Write an explanation of how cats purr. Next is Draw a cat( my dd doesn’t like drawing so computer images will be fine for her) Next is List 5 similarities between domestic and wild cats, then five differences, then they write a report on cats including information on domestic and wild cats, big cats, and their hunting habits. Here is where research and reading extra books come in. For the high school level, I just expect more than I would from a 5th grader, but the topic can stay the same. I like it, I just wouldn’t replace a science for it..