Sometimes, watching a video can present information in a way that provides understanding beyond simple text and pictures.

At other times, a video provides a useful overview of a topic, while the text and images in the course give a deeper and more complete understanding of the demonstrated procedure.

ECG_principle_slow. By Kalumet (selbst erstellt = Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons

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Real-time_MRI_-_Thorax. By Biomedizinische NMR Forschungs GmbH (http://www.biomednmr.mpg.de) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

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