These sites have educational links and activities for students.  Everything from finding a topic to learning about a subject area:

http://www.brainpop.com - many free links to information in several subject areas.  Some content areas require a subscription. 

http://www.kidsclick.org/ - a web search tool by subject area with search by reading level.  Search for lessons, pictures, sounds, etc. 

http://teacher.scholastic.com/activities/ - activities, content, games, videos and more.  Search by grade level, content area, teacher/student/parent, etc. 

http://www.schooltimegames.com/ - fun learning activities for students, ages 8 and up.  arranged by subject themes.

Keyboarding websites:

http://www.bbc.co.uk/schools/typing/ - 4 levels of practice

http://www.rapidtyping.com/downloads.html - download these free keyboarding programs

http://freetypinggames.net - play typing games online

http://www.jonmiles.co.uk/games/fingerjig/ - a 6 minute typing game/test with random words