"Teachers open the door... you enter by yourself" 
~ author unknown ~

AAA Math
http://www.aaamath.com/

ABC Ya!
http://www.abcya.com/

About.com - Education
http://www.about.com/education/

Beacon Learning Center
www.beaconlearningcenter.com

BBC Schools
http://www.bbc.co.uk/schools/

Crickweb UK
http://www.crickweb.co.uk/

Dositey
www.dositey.com/

Explore Learning
www.explorelearning.com/

EZ School
www.ezschool.com/

Fact Monster
www.factmonster.com/

AAA Math
http://www.aaamath.com/

ABC Ya!
http://www.abcya.com/

About.com - Education
http://www.about.com/education/

Beacon Learning Center
www.beaconlearningcenter.com

BBC Schools
http://www.bbc.co.uk/schools/

Crickweb UK
http://www.crickweb.co.uk/

Dositey
www.dositey.com/

Explore Learning
www.explorelearning.com/

EZ School
www.ezschool.com/

Fact Monster
www.factmonster.com/