Line Quality Lesson for Middle or Senior Art. In this lesson students will learn about Line, one of the elements of Art, and how to show depth, texture and tone through line quality. This lesson is a valuable tool to help improve students drawing skills and produce interesting and expressive drawings. The worksheet is designed so that students begin the lesson by completing simple drawing tasks to build control and confidence. They then move on to drawing an onion and a graded drawing task. Thi