Gifted Issues Discussion homepage Forums Recommended Resources AoPS for the win

http://www.artofproblemsolving.com/Edutainment/g1/Pages/Documentation.php

AoPS For The Win! (FTW) is a fun way to practice your math skills while competing with other players. There are two types of games, the normal game where you can compete against many players and the Countdown game, which is a head-to-head competition modeled after the MATHCOUNTS� Countdown round. In cooperation with MATHCOUNTS�, many of the problems in FTW are drawn from past MATHCOUNTS� contests.

I was looking at this with some interest for DS. I was wondering if anyone has use this? it's FREE. It has math count prep type questions. I was wondering how I would determine if this is within his ability level?

I will review what they have on their site. I only ask because I was looking for personal experiences and your thoughts about it.

Thanks for sharing, I will have to check this out later tonight. I have been wondering about something like this.