Links

This is a multiplication math game. You can buy it or play it on 
line.
http://www.gdbdp.com/multiflyer/v02_final/playgame.htmlx.html

National Geographic for Kids
http://www.nationalgeographic.com/kids/

This link has map games to play.  It is a good way to practice 
geography. The students may not know many state names before they 
begin to play, but they learn fast!  Good preparation for later 
grades, too.
http://www.sheppardsoftware.com/web_games.htm

This is a game for practicing place value to ten thousands.
http://www.hbschool.com/activity/elab2004/gr4/1.html

This is a game modeled after the "Millionaire" game.  It is for 
practicing using guide words.  Great skill for third graders.  We 
work on it at school, but it takes LOTS of practice.
http://www.quia.com/rr/45806.html

This multiplication game is fun!  Place the correct products into 
the grid and solve the mystery picture.
http://www.harcourtschool.com/activity/mult/mult.html

This site lets you play a game with simple and compound machines.
http://edheads.org/activities/simple-machines/

Want to practice facts on worksheets?  This site will let you 
make your own, print them out and even give you an answer sheet 
so you can check it 
yourself.
http://themathworksheetsite.com

This is a good link to practice math skills.  Click on "Base 
Blocks Subtraction" to practice subtraction with regrouping.
http://nlvm.usu.edu/en/nav/topic_t_1.html

This a great math link for instruction, practice, and games.
http://www.coolmath4kids.com

Here is a math site we've used in school for practicing 
multiplication and division.
http://www.bbc.co.uk/skillswise/numbers/wholenumbers/multiplication/timestables/game.shtml

This is a site with math and grammar games, including a game 
testing parts of speech.
http://www.arcademicskillbuilders.com/

There are many fun and helpful activities on this site for math 
and language arts.
http://superteacherworksheets.com