This has a nice collection of intersting games that my nephew really gets into. He really likes the game board connecting lessons.
My kids lived the math games
My 3 year old son really likes the racing game!
My kindergarten age daughter thinks these games are awesome!
Mental Math Games FREE for kids for Elementary School & Basic Math for Preschool
Cool math games for grade KG, 1st, 2nd, 3rd, 4th, 5th. Year first, second, third