1. Teacher can find math games online from K-8 with different topics. IXL developed this games.
http://www.ixl.com/promo?partner=google&phrase=Search%20-%20math&gclid=CKWk_43MwbECFcFeTAodLyUA6Q
2. Sheppard software created this web, where you can find the following topics: early math, basic operations, mixed operations, time, place value and more.
http://www.sheppardsoftware.com/math.htm
3. Softshools.com offers math games free, the topics you can play are addition, subtraction, multiplication, estimation, division, number sense, place value, fractions, and decimals
http://www.softschools.com/math/games/
4. Kids Math Games. Online develop fun math games as geometry, solving problems, facts, and more topics.
http://www.kidsmathgamesonline.com/
5. Primary Games has a excellent games to learn math playing games
http://www.primarygames.com/math.php#.UBag7aBmMuc
6. You can find different math games for different topics:
http://www.gogomathgames.com/?utm_source=PrimaryGames&utm_medium=banner&utm_campaign=300x250_ROS
7. ABCya.com created math games include topics such as addition, subtraction, multiplication, division, fractions, percent, counting money and telling time.
http://www.abcya.com/kids_math_games.htm?utm_source=google&utm_medium=cpc&utm_term=free_math_games_for_kids_exm&utm_campaign=USA
8. The Exciting Math Website for Kids. KidsNumbers.com is the absolutely free math resource designed by teachers, specifically for students and children of all ages. A place where students can practice all aspects of math, including addition, subtraction,
multiplication, and division, in a fun and pressure free way.
http://www.kidsnumbers.com/
9. This page consist of free & fun maths games for kids. The idea is to enable children practice elementary educational subjects by themselves by using the computer at school or at home, and to have some fun activities for second grade children, third grade
or fourth graders, to learn through play.
http://www.free-training-tutorial.com/math-games.html
10. Math Blaster. First introduced in 1987, the Math Blaster brand of educational games has helped millions of students refine essential math skills through a unique combination of lessons and arcade-style game play.
http://www.knowledgeadventure.com/school/jumpstart/Aboutus.aspx
11. At Math Play you can find a wide variety of fun games that you can play online. Most games are suitable for elementary and middle grades. They are organized by grade level, content, and game type.
http://www.math-play.com/