Play chess, improve in math:
students in the [chess] club improved their math scores on the Connecticut Mastery Test by 30 percent between fifth and sixth grade.
Be good to your kids if you want them to be good chess players,
Chess is not merely a brain game. It is also a game of neurons against
neurons. Obviously neurons with superior dendritic connections and complex networks would win. For building a superior neuronal network there are three requirements - a happy childhood, the right brain stimulating stimuli and a genetic endowment of excellent genes. A happy childhood depends on loving, caring and understanding parents.
A little more backgroud for the previous link.
My wife bought some of these the other day ... I had no idea they existed. Not only do they have chess symbols on them, but they are very delicious! Pepperidge Farm has some good stuff!