Media including audio and video clips, animations, and applet programs often accompany such notes.
In most cases, web-based materials are intended to supplement regular classroom teaching. Universities seeking to reduce costs and expand their presence internationally are currently driving widespread use of web-based lectures and tutorials. These can supplement traditional teaching methods, replace certain classes to reduce teaching load, or ultimately replace traditional teaching delivery modes entirely and thereby enable universities to more easily deliver programmes globally. This may include presentation slides synchronized with video, audio, text, and hypertext. Living Lessons Online forums and discussion boards provide a medium through which people can contribute their individual views and opinions.