Vocabulary Crossword Puzzle Maker http://www.puzzlemaker.com
Math Bowl http://www.iasp.org/dspmath.aspx
Education World http://www.education-world.com/math/
Family Education - School Resources for Parents http://www.school.familyeducation.com
Mrs. Glosser's Math Goodies http://www.mathgoodies.com
White House Kids http://www.whitehousekids.gov
National Geographic for Kids http://www.nationalgeographic.com/kids/
NASA for middle-school students http://www.nasa.gov/audience/forstudents/5-8/features/index.html
The Animal Kingdom http://www.kidport.com/RefLib/Science/Animals/Animals.htm
Backyard Nature http://www.backyardnature.net