Grids and Blocks - High School Art Sub Idea 

This is from Nic Hahn (aka Mini Matisse).....from Maureen Crosbie on Flickr. From what I read in the comments on Flickr and the blog, some kids as young as 10 can master it and some 8th graders had trouble with it. This might be a lesson you would want to give a test run with those students before you tried leaving it with a sub.