This seven minute video by Emilie Aizier Brounard is fantastic. She has created a process whereby you can make original litho prints using common household items, including aluminum foil, soap, cola, rapeseed or canola oil, and water. Watch the video and try it out with your students. Her process creates multiple impressions on either a metal press bed or by hand burnishing.
On her forum page, July 6th, Emilion says, "The bite is like the effect of light aquatint which will retain water in the sponge, making a cushion of water that repels the greasy ink roller." Her website is Art Emilion at http://www.art-emilion.fr/.
Ms. Brounard says she has been a print maker for 13 years. She did her Beaux-arts at Higher School of Art Lorraine "Ecole de l'Image" in Epinal, France. In 1999 she learned more about etching, lithography, and typography at the Graphic Art Center in La Bruyere Metaire. In 2006 she studied stone lithography with Jacques Fémonville, master litho printmaker. She teaches Etching and Drawing at the School of Visual Arts Pablo Picasso in the Urban Community of Niort. She lives near by in the city of Poitiers. She says she is one hour and thirty minutes from Paris by train (TGV). Niort is also close to the city of Bordeaux, and La Rochelle.
This video link came to my attention through fellow print maker Jean-Marc Couffin, Marseille, France. His work can be seen at http://jmcouffin.com