http://www.funbrain.com/
http://www.syvum.com/squizzes/
http://fivejs.com/free-online-typing-lessons-for-kids/
http://www.learninggamesforkids.com/
http://www.e-learningforkids.org/courses.html
http://www.learningplanet.com/stu/index.asp
http://www.eslkidstuff.com/OnlineGamesMain.htm
http://www.coolmath.com/
http://www.kidsastronomy.com/academy/index.htm
http://www.learn4good.com/kids/math.htm
http://www.princetonol.com/groups/iad/links/artgames.html
http://www.scholastic.com/teachers/student-activities
http://www.chesskids.com/newcourse/index.htm
http://www.pbs.org/teachers/
Languages:
http://reference.yourdictionary.com/other-languages/programs-to-learn-spanish.html
http://www.123teachme.com/
http://www.uni.edu/
http://www.educational-freeware.com/online/toon-books.aspx
http://www.storyplace.org/
http://www.spanish-bookworld.com/spanish-for-children.html
http://www.bbc.co.uk/schools/primaryspanish/
http://www.lcfclubs.com/
http://www.spanishplayground.net/
Other languages:
http://how-to-learn-any-language.com/e/index.html
http://www.omniglot.com/language/index.htm
http://www.hello-world.com/index.php
http://www.kidsolr.com/language_arts/page5.html
http://www.apples4theteacher.com/foreignlang.html
http://webgerman.com/languages/
http://www.learn4good.com/kids/learning_spanish_online/free_lessons_for_children.htm
http://www.ilearngreek.com/
http://www.123teachme.com/
http://www.learnalanguage.com/
http://www.bbc.co.uk/languages/
http://www.rosettastone.co.uk/
http://www.edufind.com/
http://www.bonjour.com/
http://www.thefrenchexperiment.com/
http://www.english-4kids.com/chineselessons.html
http://www.onlinefreespanish.com
Japanese:
http://livemocha.com/pages/languages/learn-japanese/
http://web-japan.org/kidsweb/language/lesson1/lesson1_01.html
http://hukumusume.com/douwa/betu/index.html
Free audio books: http://homepage2.nifty.com/to-saga/roudoku2.htm
Music:
http://www.justinguitar.com/
http://www.learnpianoonline.com/welcome.html
Electricity:
http://openbookproject.net//electricCircuits/
Math:
http://www.mathnook.com
http://www.coolmath-games.com
http://kidsgameshq.com/factor-feeder
http://www.primarygames.com/math
http://www.mathgoodies.com/factors/prime_factors.html
http://www.sheppardsoftware.com/mathgames/fractions/GreatestCommonFactor.htm
http://www.mathplayground.com/math_manipulatives.html
http://www.wartgames.com/themes/math/factoring.html
http://www.multiplication.com/games
