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/
Science Textbook Link Type in user id number11 (no spaces) password kkhc http://my.hrw.com/hrw/login_all.jsp
Internet Activities http://www.internet4classrooms.com/skills_6th_science.htm