Here are some websites to checkout:
www.starfall.com
www.spellingcity.com
www.cogcon.com/gamegoo/gooey.html
http://pbskids.org/
http://www.bbc.co.uk/schools/laac/menu.shtml
http://www.internet4classrooms.com/skills_1st.htm#lang
http://www.supersummary.com/spelling-guide/
http://www.petethecatbooks.com/
http://www.abcya.com
www.starfall.com
www.spellingcity.com
www.cogcon.com/gamegoo/gooey.html
http://pbskids.org/
http://www.bbc.co.uk/schools/laac/menu.shtml
http://www.internet4classrooms.com/skills_1st.htm#lang
http://www.supersummary.com/spelling-guide/
http://www.petethecatbooks.com/
http://www.abcya.com