Prototyping
Prototyping refers to the early visualization and iterative optimization of a user interface. Prototyping tools can be used tocreate visualizations of varying degrees of detail. This ranges fromthe basic structure of a surface (wireframes) to clickable simulations of the later application. Thus, wireframes offer a good visual basis for discussion for the project team. In addition, user feedback can be obtained early in the development process and on aregular basis. Changes resulting from the feedback can be easily included into the further development of the application.
Find a detailed description of the method here: Prototyping & Wireframes