Take a look at these parent tested, parent approved board games. Enjoy them with your children and be sure to have your children verbalize the mathematics involved in the game as much as possible. For example, if playing a comparing game, have your child say, "My number is more than your number so I take the cards." As time goes on, continue to hone the precision of the language (i.e. my number is 3 more than yours).
Board Games in Math