I’ve been out of school for decades, and I don’t spend my days solving equations (I’m more of a word person). Still, I like to think I have a solid grip on basic math: I can usually gauge whether a ...
Black marker in hand, Nick Baar returned to the whiteboard. The newly minted math tutor wrote an equation for the eighth-graders in front of him: 25 x 199 The rules were simple: No calculators or ...