classes: lecturer. The most impressive doubledot teaching does not need a projector or laptop, but the amount of lectures can be said to be "huge", watching the teacher write the lecture on the board that surprise. curriculum. The most impressive doubledot teaching does not need a projector or laptop, but the amount of lectures can be said to be "huge", watching the teacher write the lecture on the board that surprise. facility. The most impressive doubledot teaching does not need a projector or laptop, but the amount of lectures can be said to be "huge", watching the teacher write the lecture on the board that surprise. general. The most impressive doubledot teaching does not need a projector or laptop, but the amount of lectures can be said to be "huge", watching the teacher write the lecture on the board that surprise.