Here are some more brain games that I have written about...
Hey - check out our Aha!Math - online digital math for K-5, designed to build fluency as well as conceptual thinking. We're offering a Sampler (includes our science and technology literacy solutions as well) with free Teacher Accounts here: http://bit.ly/n722gb
Aha!Math provides educational games, as well as instruction modules, lessons and quizzes for teachers. All K-2 content is delivered in games - with feedback and multiple levels of play. Check out Rivercrossing - a great game that requires students to use critical thinking skills to reach their goal.
You can get a good overview of Aha!Math and see sample curriculum here: http://bit.ly/or1ZE4