Cross Curricular

Discovery Channel: http://school.discoveryeducation.com/

Fun Brain Games: http://www.funbrain.com/

Homework Spot: http://www.homeworkspot.com/

I Know That: http://www.iknowthat.com/com

Kids Know It: http://www.kidsknowit.com/

Kid's Place: http://eduplace.com/kids/

Sports Illustrated for Kids: http://www.sikids.com/

Typing Website: http://www.bbc.co.uk/schools/typing/

Language Arts

Dr. Seuss Games: http://www.seussville.com/

Starfall: http://www.starfall.com

Houghton Mifflin: http://www.eduplace.com/kids/hmr/

Prongo Games: http://www.prongo.com/games/ages6-9.html

Scholastic, Beginning Literacy: http://teacher.scholastic.com/activities/bll/index.htm

Spelling: http://www.kidsspell.com/

Mathematics

Math is Fun:  http://www.mathsisfun.com/

AAA Math K-8:  http://www.aaamath.com/

Ask Dr. Math:  http://mathforum.org/dr.math/

Math Magician:  http://www.oswego.org/ocsd-web/games/Mathmagician/maths1.html

Money Flashcards:  http://www.aplusmath.com/cgi-bin/flashcards/money

Numbers:  http://www.aplusmath.com/cgi-bin/flashcards/money

Play Math Baseball:  http://www.funbrain.com/math/index.html

Power Football:  http://www.funbrain.com/football/index.html

Science

Animals:    http://www.kidsbiology.com/animals-for-children.php

Astronomy:  http://www.kidsastronomy.com/

Biology:  http://www.kidsbiology.com/animals-for-children.php

Dinosaurs:  http://www.kidsdinos.com/

Geology:  http://www.kidsgeo.com/geology-for-kids/

Human Biology:   http://www.kidsbiology.com/human_biology/index.php

The Great Plant Escape:  http://urbanext.illinois.edu/gpe/gpe.html

Social Science 

Geography:  http://www.kidsgeo.com/geography-for-kids/index.php

History:    http://www.kidspast.com/

States:  http://www.50states.com/

Flags:  http://www.flags.net/

National Geographic Kids:  http://kids.nationalgeographic.com/kids/

Ask Jeeves Kids:  http://www.askkids.com/

Information Please Almanac:  http://www.factmonster.com/