The Greenwich Public School system recommends the following for Grades 2-5:

Grades 3-5
Type to Learn 4
http://ttl4.sunburst.com/downloads/

Grades 4-5
Learning Games for Kids
http://www.learninggamesofrkids.com/keyboarding_games.html

Grades 3-4
HomeSchool Type
http://fivejs.com/free-online-typing-lessons-for-kids

Grades 2-3
Dance Mat Typing
http://www.bbc.co.uk/scholls/typing

Keyboarding Skills are Vital
http://www.learninggamesofrkids.com/keyboarding_games.html

 
Regards, 
Elizabeth Neligan
MBA. MLIS