How I Use It
It is a good tool for anything spacial like geometry especially anything with blocks. You can also use it for its sandbox quality - creativity.
I've had kindergartners play it and love it, but the iPad Pocket Edition app is easier for them. Boys LOVE it, but girls do love it too.
It's the best game right now. That being said, it is a game. You can make it educational, but you have to limit the students and give them specific rules and tasks.