In my years as a wastewater operator trainer, I find that math is by far the most anxiety-producing topic for those preparing to take certification exams.
But why? For most wastewater math problems, all you need to do is add, subtract, multiply or divide. Everybody knows how to do that, right? Usually the problem is not with the actual math — it is with setting up the problem and picking out the right formula and the right units.When us old timers were kids learning to do math, there was no such thing as a calculator — all we had were pencil
