Nic and I have had really interesting conversations lately about leap year and leap day. He’s big into astronomy and astrophysics. And yet, he wants to argue about the efficacy of having a leap day.

So we did some mental math and tried to figure out how many years it would take for the whole of our concept of seasons to be out of wonk if the calendar didn’t have a leap day.

Try it sometime. It’s a wonderful use of one’s imagination. Have the children think about flowers just beginning to push through the dirt in August — and snow falling in mid June.

And so there it is. A whole curriculum in a nutshell called Leap Day. You have math, you have history (when did it all start anyway), you have culture (anybody still have a Sadie Hawkin’s Day or dance anymore), you have astronomy….and you have a conversation.