These skeletons started as a practice in drawing positive and negative space. Students had to carefully examine the spaces in between (the negative space) as well as the bones (the positive space). After two classes, students began to add detail and value to the bones. To fill in the background space, I demonstrated how to use watercolor paints for a crayon resist. I let the artists decide how they wanted to paint the background. This is a great drawing project to teach the principles of positive and negative space as well as value.