http://www.google.com/alerts Gloogle Alerts Receive email updates for new Google search results.

http://www.google.com/calendar Google Calendar An online calendar that can be easily shared with others

http://gears.google.com Google Gears Work “offline” and store data locally

http://groups.google.com Google Groups  Set up your own place to communicate and collaborate safely with others online

http://books.google.comGoogle Book Search Search and browse pages of books that have been indexed by Google.

http://earth.google.comGoogle Earth Fly anywhere on earth and view satellite images. (Download required)

htp://news.google.comGoogle News  Browse and search headlines from newspapers and magazines

www.google.com Google Search engine

http://sketchup.google.comGoogle SketchUp  Create, modify, and share 3-d models! (Download required)
http://sites.google.com

 Google Web Sites
http://www.google.com/support/websearch/bin/topic.py?topic=1592  

 iGooglehttp://www.google.com/educators/index.html

 Google for Educators
http://www.teachhub.com/cool-google-tools-teachers  Cool Google Tools for Teacher from Teach Hub

http://www.freetech4teachers.com/2010/07/google-for-teachers-ii-free-33-page.html Free Technology for Teacher including a Google for Teachers I & II downloadable guide.

http://gelessons.com/lessons Google Earth Lessons
http://serc.carleton.edu/NAGTWorkshops/teaching_methods/google_earth/how.html How to Teach with Google Earth 
http://www.gearthhacks.com  GEarthHacks This site works in tandem with Google Earth.  Overlay files can be downloaded and used with Google Earth.