9s addition facts

We have opted to do the Math-U-See curriculum with the kids. Noodle is in the Alpha book, and today we just started lesson 9, which happens to be 9s addition facts. I wanted her to "get it," but knew that it would be best if it clicked in her brain without me making it too obvious. We watched the chapter intro video, then started doing some practice problems. And it clicked! We drilled the facts by her marching around the ottoman while I tried to build the problem/answer pair with the manipulatives before she could recite the problem/answer, i.e. "Nine plus five is fourteen!" She really enjoyed it and she was fast! We probably did 20+ problems and I was only faster twice.