Super links to good art lesson ideas.
Art and Science
Sparkers-The Art of Camoflage
http://www.arts.ufl.edu/art/rt_room/sparkers/camouflage/camouflage.html
Wyland Ocean Challenge-Teachers Study Guides (I was one of the art idea consultants)
http://www.wylandoceanchallenge.org/pdfs/TeachersGuideIntro.pdf
Sparkers-Stormy Weather
http://www.arts.ufl.edu/art/rt_room/sparkers/stormy/storm.html
Art and Geography
http://www.arts.ufl.edu/art/rt_room/sparkers/community_map/map.html
Art and Math
M.C. Escher on Princeton on Line Website
http://www.princetonol.com/groups/iad/lessons/middle/tessell.htm