As I approach each area, skill and/or topic, I have been giving serious thought as to how each reinforces common core standards and adds rigor. After careful scrutiny, several fell under the category of busy work. Those were scrapped. While some of the tried and true made it through.
Also, you'll notice that many of the maps and guide pages have been reduced to half size. This was done in an effort to cut back on paper & ink. With out further a do... here are a few of my updated math centers.