Bouncing off Cultivating Dharma's blog (after *gratefully* downloading a copy of the elementary Maths album Jonathan's just so generously uploaded :) I visited Angeline Lillard's website for the first time. Angeline is the author of Montessori: The Science behind the Genius. There an articles link page that's well worth taking a look at, here, as well as a free download of the first chapter of the book. I was able to borrow a copy of the book last year & really dug it. Check it out!
EDIT: You can read the whole book here!