We use Math on the Level (MOTL) as the “spine” of our math curriculum.
I pull ideas for lessons from the MOTL book set, but also use many other activities and books to supplement.
For long-term review, we do 5-A-Days as outlined in MOTL. I use a lot of different online resources for our 5-A-Days. I also frequently refer to my Common Core Math Standards (K-5) chart to see where we stand, although we usually deviate from it significantly! Mr Nussbaum has a great page for more information on the standards (scroll to bottom).
Math Skills (for review)
We also enjoy lots of math-based art projects. Sometimes I use these as pure art projects, sometimes I integrate them into our math lesson time.