http://www.ezschool.com/Index.html many subjects, grades K- 12
http://www.funbrain.com/ math, reading, web books
http://www.coolmath.com/ math games
http://www.softschools.com phonics game, telling time, typing games, math
http://www.enchantedlearning.com art projects
http://www.pbskids.org games and more...
http://www.primarygames.com math, language arts, science, social studies games
http://www.crickweb.co.uk interactive resource math, language arts, science, social studies, and more...
http://www.literacycenter.net Uppercase/lowercase, shapes, colors
http://aaamath.com/index.html math instruction
http://www.kidzone.ws/ math, science, geography, language arts. Grades 1-5
http://www.bbc.co.uk/schools many subjects
http://www.homeschoolmath.net instruction, worksheets
http://www.abcteach.com/index.html Some items are free; ebooks