If you have any experience with the Everyday Math curriculum, you know that time is extremely valuable, and, although there is some Math Fact practice built into the program, it's really not enough to help those students who need that daily practice that has proven to be the best way to learn math facts: daily short bursts. That's where XtraMath comes in. I can't remember where I first heard of the program (perhaps Richard Byrne, Larry Ferlazzo, or Ilearn Technology), but I started the program mid-September.
Check this program out when you get a chance. The data that this program has collected for me proves that it works. It might not be right for every student though. For example, the program qualifies mastery as getting the answer correct in less than 3 seconds. I agree with the level of proficiency, but there are some students who get very anxious when you put a timer in front of them. I would like the option to increase the mastery timing. Other than that, I have been very pleased with XtraMath. Set up is easy, so get started today.