I had previously purchased the Creation Anatomy Notebook and I liked how it was put together. Each lesson is separated from the others. The directions in the notebook were easy to read and follow. I had purchased a different lapbook guide to go with these books but they were both confusing and disorganized. I didn't have to hunt for the materials with this curriculum. It's simple and easy to use and you can do as much or as little as you want. I also like the ringbound binding which makes it easier for young kids to focus on one page at a time.