Tom R

Numbers don't care about being reasonable. A number that rearranges itself when multiplied. A shuffled deck that's probably unique in history. An equals sign invented by someone who was just tired of writing. Math is weirder than anyone tells you.

Numbers look simple until you actually pay attention—and then they start doing things that make no sense whatsoever. Here are some facts to share with your kid. Not because they're on any curriculum, but because they're the kind of thing that makes you put your phone down.