These excellent worktexts are relatively unchanged in the newest (2013) edition. Print size is slightly smaller and, to my eyes, easier to read. One interesting "tweak" - instead of "count nouns and noncount nouns," the 2013 edition refers to them as "concrete and abstract nouns." Perhaps I'm showing my age here but that terminology is what I know and understand so I'm happy for the change. An assessment book is now part of the series.
These materials offer a complete and comprehensive coverage of all three elements - grammar (i.e. parts of speech, complete sentences), usage (i.e. homophones, figures of speech, proper word choice to convey meaning), and mechanics (i.e. punctuation, capitalization).