These days, I’m teaching high school math, and I’m seeing a big correlation between students who have a professional attitude and their math mark. At the lower math levels, students are taught the rules on how to handle minus signs, which really are not that difficult to remember and apply. These rules must be mastered to do well at the higher levels , where I notice something interesting happening. I see some students, who may or may not be understanding the higher level math, still floundering with the minus signs. As I interrogate them to discover the reason for their misunderstanding, most seem to know the rule…
