Pics4Learning is a copyright-friendly image library for teachers and students. The Pics4Learning collection consists of thousands of images that have been donated by students, teachers, and amateur photographers. Unlike many Internet sites, permission has been granted for teachers and students to use all of the images donated to the Pics4Learning collection.
The main content of the site is aimed at basic K-6 math skills. However you will find some more complex stuff, and some easier bits. Hopefully there should be something for everybody.
DOGONews is an online news and web resource for elementary school children, aged 5-10 and a publishing platform for aspiring reporters ages 9-15. "DOGO" (not DoGo), means young or small in Swahili. The website consists of three sections: News, Sites and Earth.