With the artist MUJO, the pupils created a mural in each of the schools. These generative paintings were made from giant stamps that could be assembled and combined to create a jumble of characters. Before going up on the wall, the pupils were given a guided tour of the existing works in Besançon, and were introduced to MUJO’s artistic universe and the generative system devised by the artist during in-class workshops on paper using small-format stamps.