My 4th grade daughter uses Everyday Math in school and she is accelerated one grade. I agree that it does gloss over math facts and calculations, but I like that it teaches the big picture. It introduces some advanced concepts early. For example, I remember (in K or 1) they taught matrices early. This made it very easy to talk with my daughter about square roots, geometry concepts, etc. The same with algebraic concepts.
I also like the way it spirals (covering a topic then reintroducing it again and again at more difficult levels). It keeps it more interesting so kids aren't stuck with the same types of problems for weeks and weeks.
I did think, however, that the K curriculum was pretty much a joke. It was too easy and not just for the smart kids.
