“Two, four, six, eight; bog in, don’t wait”. As children, we learn numbers can either be even or odd. And there are many ways to categorize numbers as even or odd. We may memorize the rule that ...

Have you ever wondered why we call numbers that are divisible by two "even" and all the others "odd?" What makes things like one, three, five and seven any more odd than two, four, six or eight that ...