Teachers don’t have to have all the answers.
They should, however, always have questions.
Not test questions, but thought questions.
Questions to get students to think about something they’ve never thought about before.
Questions to make them think about something they’ve always thought but think about it from a new perspective.
Questions to enable students to learn they don’t have all the answers yet.
Questions to open students to old problems that need new solutions.
Questions to make students wonder if there isn’t a better way than the usual way.
Questions to make students ask their own questions and to, perhaps, change the world for the better by the answers they find.