My coach, Susan McGilvray, encouraged the history teacher and me to work together on this lesson. She checked in with us to be sure we had everything we needed to implement the routine. She also provided support when we had questions. She was impressed with how well the implementation went given the fact that I do not typically work with the class that I taught this to. Susan and I have worked on developing other concept mastery diagrams together so that I have a new comfort level with the routine. Susan is always willing to help and provide any support needed.