There are 2 slides and 1 video below. The first slide is a simple diagram illustrating that a wire connecting the charged materials allows charges to move on the wire, using conventional direction. The second slide is a labeled screen shot of the short video below the slides. The Mylar has a conductive side under the blue side to collect charges. Foil was placed under the Teflon to collect charges. A rectifier was placed in the circuit to change the two direction current to one direction. The student activity uses more common materials.