www.rinkworks.com/brainfood/ - Puzzles for the brain
http://mathforum.org/students/
www.smithsonianeducation.org/students/
www.exploratorium.edu/science_explorer/index.html
www.fivestareducational.com/studentlinks.html - Connects you to more websites
http://starchild.gsfc.nasa.gov/docs/StarChild/StarChild.html