Aish Hatorah
http://aish.com/holidays/passover/
Songs, crafts, cards, visuals, multi-media.

Billy Bear for Kids
http://www.billybear4kids.com/holidays/pesach/pesach.htm
Activities, visual interactive links. For beginners.

Chabad
http://www.chabad.org/holidays/passover/pesach.asp?AID=1981
Intoductions, media and activities for children and families

The Dwelling Place
http://www.hsdm.com/usr/dwelling_place/peisah/kiara_game/kiara_game.html
Games, visual crafts, links.

Elimelech David Ha-Levi Web, Inc
http://www.angelfire.com/pa2/passover/
Includes trivia, quizzes, kids' stuff, poems.

Jacob Richman - the J Site
http://www.J.co.il
Includes: Passover Trivia Quiz, Clipart, Word Search, Hebrew Songs

JTSA
http://learn.jtsa.edu/passover/
Visuals, audio, coloring to go; cards
http://www.passoversite.org/
Gallery of 100 rare illuminated Haggadah texts with descriptions; question guide & historical index suitable for educators and adult education.

Ohr Samayach
http://www.ohr.org.il/special/pesach/index.htm
Basic to in-depth -- text, songs, activities & crafts, cards, visuals.

Orthodox Union (OU)
http://www.ou.org/chagim/pesach
Audio files, quiz, songs.

Partnership 2000, JAFI
http://www.yarden.ac.il/chinuch/english/oldarchives/passover_unit/opening_page2.htm
Educational activities for Pesach

Torah Tots
http://www.torahtots.com/holidays/pesach/pesach.htm
Basic guide, stories, music, cards.