classes:  lecturer. The lecture follows the book so it is relatively long and time-consuming, does not give an overview of the lesson and omits some details of the lesson.  curriculum. The lecture follows the book so it is relatively long and time-consuming, does not give an overview of the lesson and omits some details of the lesson.  facility. The lecture follows the book so it is relatively long and time-consuming, does not give an overview of the lesson and omits some details of the lesson.  general. The lecture follows the book so it is relatively long and time-consuming, does not give an overview of the lesson and omits some details of the lesson.