The "mail art" phenomena was started back in the 20's with the Dada and Fluxus art movements and revitalized in the 60's. The principle of mail art, is free exchange and artistic expression. Learners study these facts and then create collage envelopes to send to other artists. This would be a great lesson to invite another school to participate in. Then children can display the art they receive as well as photos of art they sent.