With first and second grade we talked about what "surrealism" means. Often artists create worlds in their artwork that mix reality with fantasy, and end up with something that would never happen. (Think Dahli's melting clock.)
We talked about Marc Chagall and this painting:
and then each student drew a round horizon line with a realistic place from their life. Then we turned the paper upside down and drew a fantasy land. We colored them with watercolor pencils and then added a little water. Last, we took sharpies and retraced the drawings. I love the vibrant colors, don't you?
Each of these are first grader's work.