An elementary school math question has left not only students but also a seasoned teacher—and much of the internet—scratching their heads. Bobby Seagull, @bobby_seagull, shared the puzzle his friend's ...

For 23 years, I’ve taught high school math. And for 23 years, I’ve been told by people that they either are a “math person” or they are not. I get it: Math isn’t easy. Movies and TV shows make it look ...