One of the best ways to learn something is by playing a game. Unfortunately, designing an effective learning game is a lot harder than it looks. So when I read a rave review for DragonBox, I was pretty excited.

I tried it out, and this is by far the most complete representation of algebra rules I’ve ever seen on a computer. It rivals the Algebra Models I wrote about before. It makes algebra so easy a five-year-old can learn it. And kids love the game — it’s more popular than Angry Birds on the AppStore.

There are a few relatively minor details I’d change, and I suggest you learn about the balance model of algebra along with playing DragonBox. But if you’ve had trouble with algebra, or if you’re a parent who wants your kids to avoid having trouble with algebra, DragonBox would really help.

Download it for Android, Ipad, Iphone, PC, or Mac. The 12+ version is only available for phones, but there’s a web version available until the game is ported to PC.