One of my favorite things last year was my math strategy builders we did each month. The kids loved them because they were half size and have festive pictures that go with the problems. (It's crazy the things that make them happy!)
We got them going for November and love problem solving with them!
If you want to try out my strategy builders check them out at my store HERE
We've also been working on "making 10" to add problems that equal a sum of greater then 10. It's a pretty hard concept to internalize, but they love anything that has manipulatives!