Brain GamesGreat Brain games!
Chess KidOnline Chess for Kids....teaches how to play and can practice 
Cool. Math gamesFun math games

Destination ImaginationGlobal DI website
Enchanted Learninglearning activities...good research source
Hooda MathGreat brain teasing math games
National Geographic for KidsGreat research material
North. Harris Regional DI WebsiteRegional DI information
Texas DI websiteState DI info
Great Geography Bee resources with links to several sites

Social Studies and Geography games

Four basic rules help teens write better essays -