Kindergarten:
Bad Guy Patrol.  http://www.badguypatrol.ca/default.htm

Internet Safety Game.  http://www.att.com/Common/images/safety/game.html

First Grade:
Netty's World.  http://www.nettysworld.com.au/

Second Grade:
Surf Swell Island.  http://disney.go.com/surfswell/index2.html

Third Grade:
Disney Internet Comics.  http://www.disney.co.uk/DisneyOnline/Safesurfing/cybernetiquette/
Doug Internet Safety Comic.  http://www.disney.co.uk/DisneyOnline/Safesurfing/cyberguide/main.html

Fourth Grade:
The first and second adventures of the Three Cyber Pigs:
http://www.media-awareness.ca/english/games/privacy_playground/
http://www.media-awareness.ca/english/games/cybersense_nonsense/index.cfm

Third and Fourth Grade:
Get your Web License.  http://pbskids.org/license/

Additional Second Grade Links--These are not Internet Safety sites

http://www.bbc.co.uk/schools/magickey/adventures/fraser_game.shtml
http://www.bbc.co.uk/schools/barnabybear/games/information.shtml
http://www.bbc.co.uk/schools/magickey/adventures/code.shtml
http://www.quia.com/cb/28126.html
http://www.funbrain.com/grammar/index.html
http://pbskids.org/lions/games/flood.html
http://www.fekids.com/kln/games/whomp/