The document discusses the element of line in art. It defines line as the path of a moving point through space. Artists use different types of lines, such as vertical, horizontal, diagonal, zigzag, and curved lines to lead the viewer's eye through a work of art and create feelings like formality, calmness, rising/falling, and confusion/activity. Implied lines are points the eye connects to create images without outlines being drawn. The document provides examples of different line types and assignments for students to practice using line movement in their own artwork.