When I taught preschoolers, I never knew what questions they would ask. Ms. Elizabeth, can I get married when I’m 10? That’s old, right? Ms. Elizabeth, what does Play-Doh taste like? Ms. Elizabeth, can I have a pet whale in my bathtub? Now, I teach fifth- and sixth-graders, and most of the time their questions are easier to answer. Most of the time, the questions connect to the lesson, too. Sometimes they will answer a question before I even ask it because they know where I’m going with my train of thought. I love it. Last year, though, I was asked a question that threw me for a loop. It…