Head bowed. Hands under desk or in backpack/bag/purse/pocket. Fingers twitching. And usually something large on the desk. These are the telltale signs--a student is text messaging.
It's pretty obvious. I can spot one in seconds. Yet, they either deny that they have it or they question how I could possibly see it.
I guess they think they're being sneaky. Or they think I'm an idiot. Whatever. Cell phone use is rampant, probably because it's forbidden.
The girl this morning thought I had magical powers. "How did you know?" Oh please. It's easy to spot--when I'm looking, that is.