I know the eruption didn't happen yesterday, but we weren't able to get to it until today.  We followed the lesson plan from the Learning section of the NY Times.  We read several articles from all over the world and discussed all the different types of impact the eruption had.  We mapped out the areas impacted in the articles that we read on a world map.  I would have loved to do the push pins, but we don't have a cork board.

Some are just dots, where the impact was felt locally, others are connected.  We used a color code system to view the types of connections.  Travel is economic, but we felt it should be separated due to the level of impact.