I love this curriculum.  I researched it for a couple of years before we bought it.  We had been using Saxon before we bought this and I was somewhat frustrated because it was a typical textbook.  It had been so long since I had taken Algebra that I was never sure of myself.  I had the whole package but it didn't tell how the problems where worked so at times all I could tell the boys was "Your answer is wrong and this is what the right answer should be."  Don't get me wrong, the oldest two did fine with Saxon, they both are in college studying to be engineers.  But it was very frustrating at times for both me and them. 

Now shift to the Teaching Textbook.  It is so clearly written that it pretty much teaches itself.  Secondly, there are the CDs.  I really weighed whether we should get them or not.  I didn't know if my third son would need them and it seemed that it would be a waste if he didn't.  My husband said "Get them anyway.  You don't know but that his brother may need them," so we did.  Has my son used them?  Very rarely; as a matter of fact only twice so far.  On the other hand on those occasions I have been glad that we had them.  Each time a light has gone on in his head and he has said "Oooooh I get it now!"

We never have any hassles.  There is no arguing that the answer key could be wrong.  Well one time he did but I sent him to the CD and there it was proof that he had made a mistake.  This is one of those things that truly is better than advertised and in this world those things are few and far between.  As a matter of fact I am so satisfied that I plan to get rid of all my Saxon and go strictly with Teaching Textbooks.