Hello Maya,
Here are a few pre-algebra sites for you. Let me know what else you need!
Pre- Algebra ( 3 minute movies)
http://www.glencoe.com/sec/math/prealg/prealg05/brainpops/index.php4/in
Pre- Algebra Personal Tutor
http://glencoe.mcgraw-hill.com/sites/0078885159/sitemap.html?resource=personaltutor
Pre-Algebra Movies
http://www.classzone.com/cz/books/pre_alg/book_home.htm
Pre-Algebra Tools
Junior High Interactives
http://www.learnalberta.ca/content/mejhm/index.html?launch=true
