Storyboards are used to visualize processes. When developing products it can be used to show possible application processes, the interaction between products or the behavior of involved users. This method is about creating a short story out of ideas or idea fragments that have already been developed and visualizing them in a storyboard. This allows you to visualize the function of an idea in a logical order, to complete it and to test it. Moreover you can illustrate different behavior or reactions of the users and comment on them. A storyboard usually consists of a sequence of pictures that comes along with explanatory text. Each picture stands for an important step in the total process.
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http://www.designkit.org/methods/35
http://www.upgrade-workshop.de/allgemein/filmisches-erzeahlen/