Lectures are recorded to video, audio or both, then uploaded and made viewable on a designated site.
The development of the online lecture makes it possible so that the teacher and student no longer have to be in the same vicinity to teach and learn, respectively.
Students may access online lectures posted on their designated websites anywhere in the world, at any time they wish, as long as they have an internet connection.
Studies have shown that students improve significantly in courses with online archived lectures.
There are also disadvantages to online lecturing, namely the lack of face-to-face interaction, and the fact that students cannot easily contact their instructors unless a communications link is created.