World Math(s) Day is a free web-based math competition that will take place on March 3, 2010. The web site is open now for students ages 5-18 to practice their math skills against students from over 200 countries in the lead-up to the competition. Teachers can do this with their classes, or kids can do it on their own from home. From the web site:
Students play at home and at school against other students around the world in live games of mental arithmetic. Each game lasts for 60 seconds and students can play up to 500 games, earning points for each correct answer. The students who answer the most questions appear in the Hall of Fame. Students cannot select their level but will move up as they progress.
