My husband and I just bought the whole set of Lower Elementary manuals from NAMC. It was a big purchase and pretty exciting to get the stuff in the mail. I will have to tweak some of the curriculum to fit in with our Catholic Living education.
So far, I'm halfway through with the NAMC 6-12 Classroom Guide. This guide is so awesome! I'd also like to get the 3-6 guide if it is significantly different. I totally recommend the NAMC manual as I have not come across the practical day to day function in the Montessori classroom anywhere else. I am so glad we got this now that it is summer so I can be more prepared when our school year begins.