My ninth graders have completed a module documenting how to do various tasks in OpenSim, the virtual world we use that is hosted by Reactiongrid. This wiki has the links, instructions, and other pages with tutorials on how to do various items. I was assessing this today and thought I'd pass it along as there is some great information to show you how to do things. (If you are a beginning second lifer you may also learn some things.)
"Gaming affects and infects so much of our lives to the extent many of us don't recognise its beneficial effects any more. It's no surprise that educators need to push a "games-based learning" agenda just to help education communities and leaders start to realise some of the untapped potential that comes when we look at games from the point of view of creating systemic changes in learning and learning spaces."
Share this with your students who love video games. I love how Alfred shares his thoughts on the transition from gamer to game designer. This is a huge market especially as education moves to gaming platforms as well.