This document discusses different types of charcoal including powdered charcoal, compressed charcoal, vine charcoal, and pure charcoal. It also discusses charcoal accessories like kneaded erasers and gum erasers. Elements of art covered include line, contrast, space, form, and techniques for shading and blending. The last section provides instructions for a bone drawing project requiring an off-center composition that makes the bones look 3D using both light and dark areas. Examples of previous eraser drawings are also shown.