During classes, I like to set up my easel and draw alongside my students. This allows me to demonstrate how to build a drawing from start to finish beginning with general shapes, values and relationships. Also, it's much more fun (and effective) than hovering.
This drawing is one from two semesters ago. The following stages will show two drawings of a similar still life arrangement from two different perspectives.
The medium is charcoal and a white chalk pencil on mid-toned gray paper.