It truly is a good game for younger children and is a fun way to teach kids. It introduces real world events such as where to find coal, how rare diamonds are, where lava is located, and how the agricultural era worked. It can be a social game so it teaches to a degree of social skills but extended amounts of time is not well. It teaches kids how to manage items and how not everything is easy. Mine craft also teaches kids how to express their creativity with its expansive building possibilities.
[spoiler]i don't play mine craft my self but my nephews do and I see how it helps kids learn to a degree.[/spoiler]