GoGo Math Games is a very nice site for finding free educational games in the subject of Math. These games are for grades 1st thru HS and are on a wide variety of subjects, such as: fractions, operations, money and more. Finally, there is a very nice section for teachers where they can find a wide variety of educational resources.
I highly recommend checking out GoGo Math Games by clicking here!!!
For more information check out Graphite.
For my Pinterest board on Game Based Learning click here.