My friend and often collaborating author, Kim Solga, has launched a blog you might enjoy called "KidsArt Lessons": an ongoing collection of art projects, presented by KidsArt.com (on-line catalog of art teaching materials). You can subscribe to have these art lessons appear in your email. Here is an example of an art lesson from Kim's blog:
Paint a Rainbow
Take the kids outside on a misty morning, when the grass is wet and the sun is just peeking through the clouds. You might be lucky enough to see a rainbow arching high through the sky. They say there’s a pot of gold where the rainbow touches the ground, but no one has ever found this treasure.
Kim Solga and MaryAnn Kohl have written two books together:
"Discovering Great Artists" and "Great American Artists for Kids".