classes:  lecturer. he teaches many theories, dry and difficult to understand, does not pay much attention to solving assignments for the class.  curriculum. he teaches many theories, dry and difficult to understand, does not pay much attention to solving assignments for the class.  facility. he teaches many theories, dry and difficult to understand, does not pay much attention to solving assignments for the class.  general. he teaches many theories, dry and difficult to understand, does not pay much attention to solving assignments for the class.