Time For Kids http://www.timeforkids.com/TFK/hh/rr/
National Geographic for Kids http://www.nationalgeographic.com/kids/
Discovery Channel for kids http://www.discoveryschool.com
scholastic for kids http://www.scholastic.com
Language Arts Prep site http://www.internet4classrooms.com/skills_7th_lang.htm
Vocabulary Review http://www.vocabtest.com/ms/7th_grade.htm