Well let’s have another brief review, shall we?
Mastronarde’s Introduction to Attic Greek dates back to 1993, at least, and has long been in use at UC Berkeley, and elsewhere. A second edition was released in 2013, though I am only familiar with the first edition. Both editions are well supported with some internet resources at http://atticgreek.org/ (2nd edition; a site for the 1st edition thankfully remains online. (A list of changes between editions can be found here)
Mastronarde outlines his pedagogical beliefs in his preface, saying, “My presentation is based on the belief that college students who are trying to learn Greek deserve full exposure to the morphology and grammar that they will encounter in real texts and full explanations of what they are asked to learn.” And the textbook does just that. Mastronarde does not hold back on quite full explanations, and expects (or at least presents) the panoply of Greek morphology through.
Personally, I came to Mastronarde twice – first as an independent learner trying to transition myself from a Koine background to Classical Greek, secondly as a student picking up a class to ‘fix’ my Greek (it was a class covering the second half of Mastronarde, and it was probably worth it though perhaps unnecessary).
Each chapter presents a thorough treatment of new grammatical material with in depth explanations of the reasons for morphological changes and examples of usage patterns. This is followed by vocab to be learnt and then exercises. Exercises include reading/translation passages (Greek > English) and translation exercises (English > Greek).
Mastronarde also states in the preface his aversion to a reading/inductive methodology where students are exposed to a reading text and meant to figure it out by themselves. However, he certainly doesn’t disavow reading itself. The textbook constantly brings the student into encounters with real Greek texts, and the expectation of the author is that the textbook may be used alongside, especially in the second half, the reading of a first Greek text (Xenophon being an obvious candidate).
Personally, I still turn to Mastronarde if I want an explanation for something. It’s in-depth, and yet user-friendly enough that it’s often more useful to read Mastronarde’s treatment of a grammatical topic, than to turn to a reference grammar like Smyth. For those who like a rigourist approach of grammar/morphology/reading/translation, I do recommend Mastronarde to them, as it’s a lot more friendly than, say, H&Q, though no less a stern taskmaster. I’m not sure I’d teach from it, but as usual that’s more due to my pedagogical preferences. Mastronarde is probably one of the better offerings on the market for traditional Classical Greek introductory textbooks.