Nasa webpage involving all things SPACE and EXPLORATION http://www.jpl.nasa.gov/
National Geographic for Kids http://www.nationalgeographic.com/kids/
Web Enhanced Instruction http://www.learning.com
Spelling Activities http://www.spellingtime.com
Great spelling site that we use in the computer lab. Kids can input their spelling words and the site creates strategic games that assist in teaching/learning the words http://www.spellingcity.com
Space-based multiplication fact practice. This is highly recommended http://www.brainormous.com/online/loader_multiflyer.html
Fact-based multiplication games that assist with retention and automaticity (rote memorization of multiplication facts). http://www.multiplication.com
Hotlist of division fact practice games and tutorials. http://www.gamequarium.com/division.html
Computer-assisted gaming that allows students to 'master' their division skills! http://www.fun4thebrain.com/division.html
Large portal of mathematics, literacy, and geography (and entertaining!) educational games. The mathematics games in particular are used to assist in helping children to master their multiplication facts. http://www.learninggamesforkids.com/
Great operations-based portal with fun multiplication games (lower right) http://www.kidsnumbers.com/multiplication.php
Basic operations games (mostly division)- somewhat entertaining http://www.arcademicskillbuilders.com/
Portal for great multiplication/division practice sites http://www.onlinemathlearning.com/multiplication-games.html
Searchable database of great and entertaining multiplication/division (and other operational...) games – I use many of these in class http://www.mrnussbaum.com/mathgames.htm
Snork's Long Division Practice- A tutorial-type game that teaches the long division algorithm we all know and love! http://www.kidsnumbers.com/long-division.php