This semester I have, without fail, missed the last 30 seconds of every lecture in every class. No, I have not been sneaking out early. And no, I don't just fall asleep after 49 and a half minutes.
DEAR MISS MANNERS: I teach seventh grade in a suburban school. I have noticed an increasingly unsettling trend as I walk around the room to check on students: Nobody says “yes, please” or “no, thank ...
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