NASA for middle-school students http://www.nasa.gov/audience/forstudents/5-8/features/index.html
National Geographic for Kids http://www.nationalgeographic.com/kids/
EdHelper- A great resource for all subject matter http://www.edhelper.com
Middle School Science Website http://www.sciencespot.net
Holt Science and Technology On-Line Textbooks my.hrw.com
Holt Science and Technology- Parent and student resources http://go.hrw.com/hrw.nd/gohrw_rls1/pKeywordResults?HS7%20STUDENT