Dragon Box+ is the coolest game I've found in a long time. My BIL told me to look it up when he learned my son was into math, and we just beat the game including the bonus content that is solving actual algebraic equations. I highly recommend it for any age group, just to learn the basics of algebra or to refresh your memory. Its very easy to learn, and addicting fun.
I just found out you can install it on your computer if you don't have an IPOD/IPAD or Android device. You can install the "Blue Stacks" program on your computer, which lets you run Adroid apps. http://bluestacks.com/?page_id=339
and then you can purchase the app and play it on your computer. Pretty cool! Here is the link for the Dragon Box app on Google Play. https://play.google.com/store/apps/details?id=com.wewanttoknow.DragonBoxPlus&feature=nav_other#?t=W251bGwsMSwxLDYsImNvbS53ZXdhbnR0b2tub3cuRHJhZ29uQm94UGx1cyJd
Mom - I'll get you setup with this next time I come over if you want me to.