I (Jamie) still remember the day I walked into a coworker’s classroom and proudly showed him a poster I had made for my fourth graders who were struggling with long division. On the large sheet of paper, I had written a catchy mnemonic device and carefully drawn a related picture to spell out the steps to follow when solving a division problem. As a third-year teacher, I thought it was not only “Pinterest-worthy,” but also a flawless way to get my students to follow the process of long division. I was a bit taken aback when my coworker was much less enthusiastic about my poster. Instead,...Read more