I use this lesson to teach or reinforce the concept of cool ("ocean") and warm ("sunset" or "fire") colors. We check out and discuss some famous paintings that use warm palettes, like Van Gogh's Olive Trees with Yellow Sky and Sun, and others with cool palettes, like Monet's Water Lilies. Then students draw and paint several "suns" with warm colors (tempura block paints). I also use this project to teach a little about drawing different facial expressions mostly by changing mouth and eyebrow position and size, and I supply the students with several cartoon facial expression examples that they are free to copy or modify as they choose. They add expressions to their suns and then paint their backgrounds using only cool colors. The result is these boldly colored "Sun Expression" paintings.