One thing that is great about the kindergarten and 1st grade core subjects is that there is so much overlap between what they learn in the classroom and what is in the art core. This was a simple lesson for 1st graders about horizontal and vertical lines and the primary colors. I cut black strips of paper and had students glue 5 horizontal/vertical lines anywhere on the page (accept the edges). Then the next week, they painted one square yellow, blue and red. It was great fun.