Math Mammoth. At the time, I chose the full 3rd grade curriculum from their Light Blue Series. In a nutshell, my son did not like the way it was laid out. He is my little math kid, and was fighting me to do math. So, when I was asked to review Math Mammoth again, I was not thrilled at the prospect. This time, though, I reviewed the Blue Series. The Blue Series is topic specific rather than a full grade curriculum. I am surprised to say that I love it.
I'm really not sure what else I can say about it. The program is very self-explanatory. The topic specific books are a very affordable addition to any program. The prices range between $2.20 and $7.50 per book. If you want, you can order the whole set for $105. If you have a child just starting in math, I would maybe consider that. Otherwise, I would just order as needed. I may order another one for the more difficult multiplication, just to make sure he's got that down. If you're not sure where to start, they have placement tests on their website. I kind of wish they had these topic specific books for the upper levels, like algebra or geometry. My older one could definitely use some more practice in factoring.
I received these e-books in exchange for my honest review. I received no other compensation. You can read more reviews here.