🚦 Rotation Relay Design Jam

Students rotate through fast stations using string, rulers, protractors, grid paper, and round object examples to locate centers, measure radius and diameter, estimate arc length, and compare sectors on lids, wheels, and roundabout images. The class then receives the circular design challenge and drafts a first sketch for a roundabout, fountain base, or organizer in a project log with one labeled measurement and one design constraint. Close with a quick exit circle in which each student names one circle idea they can use in a real product and one question they still have.