Continuity
Describes our tendency to perceive objects that seem to have a relationship to each other as being continuous. For example, we perceive the pattern below as two lines crossing rather than as two angles joined at their apexes (Pettersson, 1989, p 71).
Keeping the law of continuity in mind means that making sure that you guide the learner's eye. Note, how, in the instructional message below, the principle of continuity guides your eye and explains why we see the images on the left as one rather than five separate things: