Wonkyworld: Cinco de Mayo Have each student create a quarter of a circle to create the large work. We could incorporate this with our mandala lesson. When they finish their individual mandala, they will do one one black paper for the collaboration.
For beginning of the year guidance lesson, would probably use something besides a flower. Each student paints a flower. Cut each flower into quarters. Rearrange them and glue them to a board with matte medium.
line art group project -- I would like to do this with computer graphics. Maybe with instructions that each student make a slide on powerpoint where something must start/end at certain grid points on the sides of the paper (a road, a ball, a line.