The Graphite Sandbox featured my big chunk of graphite, 9B graphite crayons from Germany, blocks of graphite, liquid graphite, powdered graphite, and water soluble graphite.
I also brought different surfaces to draw on such as bristol, vellum, and toned laid paper. I demoed each of the types of graphite on each of the surfaces and turned the students loose to experiment. Six students attended and tried a wide range of techniques including hand prints with the powder and lots of delicate smudging with tortillions.
These students now have a more sophisticated view of the potential for graphite.