Man is the great pattern-maker and pattern perceiver.
No matter how primitive his situation, no matter how tormented, he cannot live in a world of chaos. The spatial organization of graphic and textual components on a Web page can engage the student with graphic impact, focus the student's attention, prioritize information, and make the student's interaction with the lesson site more pleasurable and efficient. Many of the issues relevant to visual design for WBI are similar to those faces when design any user interface. Graphic design creates visual logic, an optimal balance between visual sensation and graphic or text information. Dense text documents without the contrast and visual relief offered by graphics and careful page layout and typography are also more difficult to read, particularly on the relatively low-resolution screens of current personal computers.