I ran into the blog Somewhat in the Air by a parent who is doing Montessori style Homeschool for a couple boys (hat tip to Ms. De La Cruz). The kids are in elementary but approaching middle school age and they have some great links to resources that they use for projects that would also work well in the classroom or for individual projects.
The blog also contains some of the students’ work and the author’s reflections on Montessori philosophy. It’s a fascinating read and I’m really looking forward to seeing how it evolves as the kids grow older.