As we have entered the month of August, every teacher, whether she likes it or not, starts thinking about school. Some of us have dreams (or nightmares). Some of us go on a Pinterest spree. We walk through Target and ask ourselves "What do I 'need' from the dollar section?" You don't do this? Okay, maybe it's just me. Anyway, we are also thinking about what were some of our students' challenges last year, and how we will address them this year. My third and fourth graders had difficulty with…