General

http://kids.goo.ne.jp/index.html

http://www.sabotenweb.com/bookmarks/language.html

http://www.thejapanesepage.com/index.htm

http://members.aol.com/writejapan/index.htm

http://www.lion.co.jp/kids/

Hiragana

http://members.aol.com/writejapan/hiragana/both.htm

Katakana

http://members.aol.com/writejapan/katakana/writutor.htm

Kanji

http://web.mit.edu/jpnet/kanji-project/sites/yookoso/index.html

http://www.thejapanesepage2.com/kanji/dictionary.htm

http://members.aol.com/rtdrpt/kanji/writutor.htm

http://www.sabah.edu.my/meiko/

http://www.human.gr.jp/hitsujun/kanzi/index.htm

http://www.msu.edu/~lakejess/Kanji_Page.html

http://www.nuthatch.com/kanjicards/index.html

http://www.asahi-net.or.jp/~ik2r-myr/kanji/kanji1a.htm

http://www.lang.nagoya-u.ac.jp/~mohso/kyozai98/KANJI/top.html