Happy hundred and thirty-fourth birthday to Albert Einstein. It’s not a particularly significant birthday, especially for a deceased person, though it is an interesting number: a hundred and thirty-four is a nontotient, which means that there is no integer with exactly a hundred and thirty-four coprimes below it. This would probably entertain Einstein. He might also be entertained by these songs about him: http://nyr.kr/YdTgLp

Margaret Talbot with the case against single-sex classrooms: http://nyr.kr/Oa4TwA

What has changed since the nineties is the notion of who single-sex education is supposed to help most. In the nineties, it was girls. … But that did not turn out to be the long-term problem.

A Pat Byrnes cartoon from 2000. Happy Pi Day!

Adam Gopnik looks back at fifty years of “The Phantom Tollbooth”: http://nyr.kr/rjHlyT. What is your favorite book from childhood?