Learn how to calculate the area of paintings and shapes as graffiti artist Scape Martinez uses math to plan the supplies required for his artwork in this video from the Center for Asian American Media. In the accompanying classroom activity, students learn how to calculate the area of a large letter to be painted, create their own design, and determine how much spray paint they would need to paint it. To get the most from this lesson, students should know how to find the area of shapes and be able to use a constant of proportionality to find proportional relationships.