A very cool site, with 3-D illusions, illusion puzzles, scientific explanations, and interactive demonstrations. The Sistine Chapel One of the most amazing virtual tours on the web. An online gallery of children's art. Your students may submit their own art for viewing. Over 50 separate lessons here for elementary level students, submitted by teachers.
Many lessons introduce the students to great works of art, the artist, and their styles.
See, for example, Van Gogh Cypresses, or face painting a la Matisse. A large collection of art activities and lessons for use both at school and at home, from Houghton-Mifflin. Click on Art, and the appropriate grade level, from K-8. For Kids Learn about line, color, space, and shape by being an art detective and following the clues. Museum field trip at the end.