I have been a math educator for over 14 years. I was hired as a math instructional coach to help math teachers improve their instruction. The same year I was hired the district started implementation of the CPM math courses. I can still remember the day I was sitting in a class observing a teacher as he was teaching a lesson about completing the square. For the first time in my life I understood what completing the square really meant. I could always do the process but now had the understanding of what I was really doing. Time and time again while using this curriculum I have gained understanding of why the math procedures I can do and have taught students to do work. It is no longer a mystery; now I understand why. Understanding is what is really important, not doing skills and procedures.