I have just finished the second term of Minecraft for developing citizenship with my 3 year 9 Social Studies Classes. Each class had about 12 eighty minute periods over the two terms engaging with their classes Minecraft world.
I use this in place of a traditional students work book. It is a place to collate all their work from class as a digital portfolio. Their research, evidence of learning, thinking, reflections, assessments, plans, everything goes up on here. I organise the different posts according to units using the labels feature.