Members of a third-grade class were involved in a heated discussion. They were using a fixed number of links to create fences for toy cows. The children could change the shape of the field produced by the links, but they could not add any links or take any away. Understanding the relationship between perimeter and area is a difficult concept for students. They have trouble conceiving that perimeter and area are two different measures: Perimeter measures the length of the boundary of a figure, whereas area measures its size. Integrating mathematics and art uses the design process to make learning mathematics authentic, meaningful, and engaging for students. In this article, third-grade students used twenty-five square sticky notes to design artwork and predict perimeters.