There’s a funny scene in “Ferris Bueller’s Day Off”—one of my all-time favorite movie moments. The teacher, played by Ben Stein (no relation), bulldozes through a lesson, oblivious to the fact that ...

What would you say is the hardest part of teaching? For me, it is lesson planning. It takes me on average six hours a week to plan instruction for the nine science units I teach each year. It’s not ...