I checked out three of the DLCS found in Mincraft.edu. One was dealing with fractions which was surprisingly more effective than I thought. The next was the Oregon Trail which I recommend for a group of people to play together. A lot of bad things can happen if you are not careful so be prepared for that one. The last is a desert island where while the world is infinite, you just build what were would bring to an island. A little artsy thing for any builders around.