Biography.com/Black History - awesome site! 4th grade and up. Has interactive timelines, biographies, photo gallery, etc. Don't use the videos, they take up too much bandwidth.
I've Known Rivers, by Langston Hughes. This beautiful poem is read and discussed by the author (it's an audio file, with written text). Approximately 4th grade and up.
Image Gallery with captions from Encyclopedia Britannica
The official food pyramid from the government. This is an interactive pyramid, but it is organized differently from the pyramid we are using at school. The different food groups are organized by columns instead of rows.
