Outstanding collection of guides/tutorials for teachers of art. Lots of detailed images on how to use a variety of drawing mediums and associated techniques.*1*DRAWING*2*Charcoal*4*Changeovers*4*Colored Pencil*4*Colored Pencil, WET*4*Contour Drawing*4*Crayon Etching*4*Contour to texture*4*Drawing Compositions*4*Gesture Drawing*4*Grid Drawing*4*Ink Texture Drawing*4*Ink Wash*4*Line, Basic Element of Art*4*Pencil Techniques*4*Parabolic Design*4*Triangles*4*Parabolic Circles*4*Pastels*4*Surface Study