A while back I saw a great idea over at Mrs. Picasso's blog using Paul Klee. I tried it with grades 1 through 4, modifying for each level. They all did a great job, but I think I like the lesson at 2nd grade best. First grade wrote messages of thanks. This lesson started the week after Hurricane Sandy and right before Thanksgiving. Second grade wrote abstract poems listing things about either fall or winter. They colored in with warm or cool color schemes. Third and Fourth grade worked with marker. Their poems were more sophisticated and they tried to transition the colors from fall to winter to simulate the change of seasons.
Here are some finished samples by 2nd grade:
1st grade samples: