I took the leap in ordering this bundle of Nature Studies, and have been no less than amazed at their depth and quality, while still savoring of the sweet simplicity inherent in all the Treehouse Schoolhouse products. We have used quite a few different types of Nature Study guides and even a subscription or two, but none of them came close to the ease of use, powerful beauty, and joy for the children that we've experienced time and again with Treehouse Schoolhouse. I am just a normal homeschooling Mom who was always struggling to fit in this formative and inspiring school subject, until finding these guides, and now it seems that we are actually not just 'getting it done', but thriving, and loving every minute. Thank you so much to you all!