I've let my mail pile up, and hope it's not to late to give you this info.
One of the best art ed. books I've read is June McFee's & Rogena Degge's
"Art, Culture, and Environment" Kendall/Hunt Publishing. It has a large
variety of lessons, excellent essays and philosophies. I think you'll find
this book to be most useful. I also suggest this book to any art educator.