After reading Peter Reynold's book, The Dot, last week 3rd graders designed dots in a segment that was to become a larger, collaborative "pathway of dots."
They used a color system of cool colors to create the path and warm colors with a cool center to design their dots. The actual lesson can be found here. The only addition I made to that lesson was to have students use their 4 fingers (not including their thumb) to measure the width of their pathway. That gives the path continuity when putting the segments together.
Kids LOVE seeing how the segments can be attached in different ways! This is fun for them to do on the rug in groups before it actually goes up on the wall!!