Back with another math lesson. I've got a quarter and I'm going to flip it. You call it in the air. Heads or tails? Did you say heads? It was heads. And I hope you were right. One of my favorite ...

There used to be a saying — “pennies make dimes and dimes make dollars” — that stressed the importance of saving your money (the phrase later showed up in a country song). Today, some Lincoln pennies ...