Art is not a subject at which I am particularly adept at teaching. Though, I do try. This year I've been attempting to tie in our study of art with our history lessons. The Heilbrunn Timeline of Art History has come in handy for this. On this site you can simply pick an era of history off the timeline and then be able to see examples of the art of that period from all over the world. Pretty handy.
A great addition to a study of history or of art.