Grammar Workbook, An Intro to Advanced Grammar, came at a great time. My daughter, who can rattle off historical facts like nobody's business, struggles with grammar, and needs some extra help in that area. Although not a large book, Grammar Workbook is packed with a lot of information. I would have preferred the explanation of each new concept to be explained a bit more simply and more in depth, but I was able to walk my daughter through it with a bit of my own tweaking, and it worked. She hasn't completed the book yet, but I feel confident that it will help her to gain confidence in this subject.
I recommend Grammar Workbook for review or extra practice, but not as a stand alone curriculum. It is available at a very reasonable price at Amazon.com.
I received a copy of this book in exchange for my honest opinion. All opinions are my own.